What is the % increase/decrease
from to ?
from to ?
Rounding
What is the percentage increase/decrease from 30.9 to 30?
Answer: The percentage change is -2.91%.
Let's see how we can calculate this percentage: what is the percentage increase/decrease from 30.9 to 30? Here is a very simple step-by-step guide to find out.
Step 1: We use the following formula:
\(\text{Percentage change}\) = \({Y-X \over X} \cdot 100\%\)
• \(X = 30.9\)
• \(Y = 30\)
• Percentage change calculation = \({30-30.9 \over 30.9}\) = \({-0.9 \over 30.9}\) = \(-0.029126213592233\)
• \(X = 30.9\)
• \(Y = 30\)
• Percentage change calculation = \({30-30.9 \over 30.9}\) = \({-0.9 \over 30.9}\) = \(-0.029126213592233\)
Step 2: A percentage is a number or ratio expressed as a fraction of 100.
\(-0.0291\) = \(-2.91 \over 100 \) = \(-2.91\%\)
\(Answer: \) The percentage change is -2.91%.
\(Answer: \) The percentage change is -2.91%.
Use the percentage calculator to solve other similar percentage calculation questions.
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