Percentage Calculator

Percentage Calculator is a super easy to use & free online tool to calculate percentages.

What is % of ?

is what % of ?

What is the % increase/decrease
from to ?



Rounding


How shall I use the Percentage Calculator?

The use of the Percentage Calculator is very straightforward: Enter the missing values, then click on the = button. You will see the results of the percentage calculation immediately. PercentageCalc.org helps you to run the three most common percentage calculations quickly and easily.

You can also download our Percentage Calculator in Excel.

What is percentage?

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%". A percentage is a dimensionless number; it has no unit of measurement. Percentages are often used to express a proportionate part of a total.

You can convert percent to fraction and also to decimal very easily. For example: \(75\%\) = \(75 \over 100 \) = \(0.75\)

How is percentage calculated?

It depends on the subject, more precisely on the thing you would like to calculate. There are several formulas for percentage calculations. The website PercentageCalc.org contains the three most common calculations. You will find their detailed description below. These formulae are:

1. Percentage of a value calculation -> What is P percent of X

2. Percentage calculation -> X is what percent of Y

3. Percentage change calculation -> Find the percentage change from X to Y

1. Percentage of a value calculation

This might be the most common case: You would like to calculate a certain percentage of something. To put it in another way, you would like to know what P per cent of X is. For example, you would like to know what 20 percent of 80 dollars is.

We use the following formula: \(\text{Percentage of a value} = X \cdot P\%\)

The calculation is as follows: \(80\cdot20\%\) = \(80\cdot{20 \over 100}\) = \(80\cdot0.2\) = \(16\).

Percentage Calculator Examples: Percentage of a value calculation

What is P% of X? X = 2.4 X = 64 X = 114 X = 214
P=5%5% of 2.45% of 645% of 1145% of 214
P=10%10% of 2.410% of 6410% of 11410% of 214
P=15%15% of 2.415% of 6415% of 11415% of 214
P=20%20% of 2.420% of 6420% of 11420% of 214
P=25%25% of 2.425% of 6425% of 11425% of 214
P=30%30% of 2.430% of 6430% of 11430% of 214
P=35%35% of 2.435% of 6435% of 11435% of 214
P=40%40% of 2.440% of 6440% of 11440% of 214
P=45%45% of 2.445% of 6445% of 11445% of 214
P=50%50% of 2.450% of 6450% of 11450% of 214
P=55%55% of 2.455% of 6455% of 11455% of 214
P=60%60% of 2.460% of 6460% of 11460% of 214
P=65%65% of 2.465% of 6465% of 11465% of 214
P=70%70% of 2.470% of 6470% of 11470% of 214
P=75%75% of 2.475% of 6475% of 11475% of 214
P=80%80% of 2.480% of 6480% of 11480% of 214
P=85%85% of 2.485% of 6485% of 11485% of 214
P=90%90% of 2.490% of 6490% of 11490% of 214
P=95%95% of 2.495% of 6495% of 11495% of 214
P=100%100% of 2.4100% of 64100% of 114100% of 214

2. Percentage calculation

In this case you would like to know that X what percent of Y is? For example, you know that you have 20 apples left out of 80 apples. What percent of 80 apples is 20 apples then?

We use the following formula: \(\text{Percentage calculation} = {X \over Y}\)

The calculation is as follows: \({20\over80}\) = \(0.25\) = \(25\%\)

Percentage Calculator Examples: Percentage calculation

X is what % of Y? Y = 2.4 Y = 34 Y = 64 Y = 114 Y = 214
X=55 is what % of 2.45 is what % of 345 is what % of 645 is what % of 1145 is what % of 214
X=1010 is what % of 2.410 is what % of 3410 is what % of 6410 is what % of 11410 is what % of 214
X=1515 is what % of 2.415 is what % of 3415 is what % of 6415 is what % of 11415 is what % of 214
X=2020 is what % of 2.420 is what % of 3420 is what % of 6420 is what % of 11420 is what % of 214
X=2525 is what % of 2.425 is what % of 3425 is what % of 6425 is what % of 11425 is what % of 214
X=3030 is what % of 2.430 is what % of 3430 is what % of 6430 is what % of 11430 is what % of 214
X=3535 is what % of 2.435 is what % of 3435 is what % of 6435 is what % of 11435 is what % of 214
X=4040 is what % of 2.440 is what % of 3440 is what % of 6440 is what % of 11440 is what % of 214
X=4545 is what % of 2.445 is what % of 3445 is what % of 6445 is what % of 11445 is what % of 214
X=5050 is what % of 2.450 is what % of 3450 is what % of 6450 is what % of 11450 is what % of 214
X=5555 is what % of 2.455 is what % of 3455 is what % of 6455 is what % of 11455 is what % of 214
X=6060 is what % of 2.460 is what % of 3460 is what % of 6460 is what % of 11460 is what % of 214
X=6565 is what % of 2.465 is what % of 3465 is what % of 6465 is what % of 11465 is what % of 214
X=7070 is what % of 2.470 is what % of 3470 is what % of 6470 is what % of 11470 is what % of 214
X=7575 is what % of 2.475 is what % of 3475 is what % of 6475 is what % of 11475 is what % of 214
X=8080 is what % of 2.480 is what % of 3480 is what % of 6480 is what % of 11480 is what % of 214
X=8585 is what % of 2.485 is what % of 3485 is what % of 6485 is what % of 11485 is what % of 214
X=9090 is what % of 2.490 is what % of 3490 is what % of 6490 is what % of 11490 is what % of 214
X=9595 is what % of 2.495 is what % of 3495 is what % of 6495 is what % of 11495 is what % of 214
X=100100 is what % of 2.4100 is what % of 34100 is what % of 64100 is what % of 114100 is what % of 214

3. Percentage change calculation

Percentage change calculation is used to determine the change between the start value and the end value. This formula also helps you to decide whether you can talk about an increase or a decrease. For example, the price of a product changed from 200 to 300. What percentage change could it mean?

We use the following formula: \(\text{Percentage change}\) = \({(\text{End Value} - \text{Start Value})\over\text{Start Value}}\) \(\cdot 100\%\)

The calculation is as follows: \({(350-200) \over 200} \cdot 100\%\) = \({150 \over 200} \cdot 100\%\) = \(0.75 \cdot 100\%\)= \(75\%\)

The result of this type of calculation can be positive or negative. If the result is positive, it is called percentage increase (just like in our example above). If the result is positive, it is called percentage decrease.

Percentage Calculator Examples: Percentage change calculation

What is the % increase/decrease
from X to Y ?

X to Y Y = 2.4 Y = 64 Y = 214 Y = 514 Y = 1014
X = 1010 to 2.410 to 6410 to 21410 to 51410 to 1014
X = 2020 to 2.420 to 6420 to 21420 to 51420 to 1014
X = 3030 to 2.430 to 6430 to 21430 to 51430 to 1014
X = 4040 to 2.440 to 6440 to 21440 to 51440 to 1014
X = 5050 to 2.450 to 6450 to 21450 to 51450 to 1014
X = 6060 to 2.460 to 6460 to 21460 to 51460 to 1014
X = 7070 to 2.470 to 6470 to 21470 to 51470 to 1014
X = 8080 to 2.480 to 6480 to 21480 to 51480 to 1014
X = 9090 to 2.490 to 6490 to 21490 to 51490 to 1014
X = 100100 to 2.4100 to 64100 to 214100 to 514100 to 1014
X = 110110 to 2.4110 to 64110 to 214110 to 514110 to 1014
X = 120120 to 2.4120 to 64120 to 214120 to 514120 to 1014
X = 130130 to 2.4130 to 64130 to 214130 to 514130 to 1014
X = 140140 to 2.4140 to 64140 to 214140 to 514140 to 1014
X = 150150 to 2.4150 to 64150 to 214150 to 514150 to 1014
X = 160160 to 2.4160 to 64160 to 214160 to 514160 to 1014
X = 170170 to 2.4170 to 64170 to 214170 to 514170 to 1014
X = 180180 to 2.4180 to 64180 to 214180 to 514180 to 1014
X = 190190 to 2.4190 to 64190 to 214190 to 514190 to 1014
X = 200200 to 2.4200 to 64200 to 214200 to 514200 to 1014
Percentage Calculator Online