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 = 3.6 X = 76 X = 126 X = 226
P=5%5% of 3.65% of 765% of 1265% of 226
P=10%10% of 3.610% of 7610% of 12610% of 226
P=15%15% of 3.615% of 7615% of 12615% of 226
P=20%20% of 3.620% of 7620% of 12620% of 226
P=25%25% of 3.625% of 7625% of 12625% of 226
P=30%30% of 3.630% of 7630% of 12630% of 226
P=35%35% of 3.635% of 7635% of 12635% of 226
P=40%40% of 3.640% of 7640% of 12640% of 226
P=45%45% of 3.645% of 7645% of 12645% of 226
P=50%50% of 3.650% of 7650% of 12650% of 226
P=55%55% of 3.655% of 7655% of 12655% of 226
P=60%60% of 3.660% of 7660% of 12660% of 226
P=65%65% of 3.665% of 7665% of 12665% of 226
P=70%70% of 3.670% of 7670% of 12670% of 226
P=75%75% of 3.675% of 7675% of 12675% of 226
P=80%80% of 3.680% of 7680% of 12680% of 226
P=85%85% of 3.685% of 7685% of 12685% of 226
P=90%90% of 3.690% of 7690% of 12690% of 226
P=95%95% of 3.695% of 7695% of 12695% of 226
P=100%100% of 3.6100% of 76100% of 126100% of 226

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 = 3.6 Y = 46 Y = 76 Y = 126 Y = 226
X=55 is what % of 3.65 is what % of 465 is what % of 765 is what % of 1265 is what % of 226
X=1010 is what % of 3.610 is what % of 4610 is what % of 7610 is what % of 12610 is what % of 226
X=1515 is what % of 3.615 is what % of 4615 is what % of 7615 is what % of 12615 is what % of 226
X=2020 is what % of 3.620 is what % of 4620 is what % of 7620 is what % of 12620 is what % of 226
X=2525 is what % of 3.625 is what % of 4625 is what % of 7625 is what % of 12625 is what % of 226
X=3030 is what % of 3.630 is what % of 4630 is what % of 7630 is what % of 12630 is what % of 226
X=3535 is what % of 3.635 is what % of 4635 is what % of 7635 is what % of 12635 is what % of 226
X=4040 is what % of 3.640 is what % of 4640 is what % of 7640 is what % of 12640 is what % of 226
X=4545 is what % of 3.645 is what % of 4645 is what % of 7645 is what % of 12645 is what % of 226
X=5050 is what % of 3.650 is what % of 4650 is what % of 7650 is what % of 12650 is what % of 226
X=5555 is what % of 3.655 is what % of 4655 is what % of 7655 is what % of 12655 is what % of 226
X=6060 is what % of 3.660 is what % of 4660 is what % of 7660 is what % of 12660 is what % of 226
X=6565 is what % of 3.665 is what % of 4665 is what % of 7665 is what % of 12665 is what % of 226
X=7070 is what % of 3.670 is what % of 4670 is what % of 7670 is what % of 12670 is what % of 226
X=7575 is what % of 3.675 is what % of 4675 is what % of 7675 is what % of 12675 is what % of 226
X=8080 is what % of 3.680 is what % of 4680 is what % of 7680 is what % of 12680 is what % of 226
X=8585 is what % of 3.685 is what % of 4685 is what % of 7685 is what % of 12685 is what % of 226
X=9090 is what % of 3.690 is what % of 4690 is what % of 7690 is what % of 12690 is what % of 226
X=9595 is what % of 3.695 is what % of 4695 is what % of 7695 is what % of 12695 is what % of 226
X=100100 is what % of 3.6100 is what % of 46100 is what % of 76100 is what % of 126100 is what % of 226

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 = 3.6 Y = 76 Y = 226 Y = 526 Y = 1026
X = 1010 to 3.610 to 7610 to 22610 to 52610 to 1026
X = 2020 to 3.620 to 7620 to 22620 to 52620 to 1026
X = 3030 to 3.630 to 7630 to 22630 to 52630 to 1026
X = 4040 to 3.640 to 7640 to 22640 to 52640 to 1026
X = 5050 to 3.650 to 7650 to 22650 to 52650 to 1026
X = 6060 to 3.660 to 7660 to 22660 to 52660 to 1026
X = 7070 to 3.670 to 7670 to 22670 to 52670 to 1026
X = 8080 to 3.680 to 7680 to 22680 to 52680 to 1026
X = 9090 to 3.690 to 7690 to 22690 to 52690 to 1026
X = 100100 to 3.6100 to 76100 to 226100 to 526100 to 1026
X = 110110 to 3.6110 to 76110 to 226110 to 526110 to 1026
X = 120120 to 3.6120 to 76120 to 226120 to 526120 to 1026
X = 130130 to 3.6130 to 76130 to 226130 to 526130 to 1026
X = 140140 to 3.6140 to 76140 to 226140 to 526140 to 1026
X = 150150 to 3.6150 to 76150 to 226150 to 526150 to 1026
X = 160160 to 3.6160 to 76160 to 226160 to 526160 to 1026
X = 170170 to 3.6170 to 76170 to 226170 to 526170 to 1026
X = 180180 to 3.6180 to 76180 to 226180 to 526180 to 1026
X = 190190 to 3.6190 to 76190 to 226190 to 526190 to 1026
X = 200200 to 3.6200 to 76200 to 226200 to 526200 to 1026
Percentage Calculator Online