What is the % increase/decrease
from to ?
from to ?
Rounding
What is the percentage increase/decrease from 99 to 79?
Answer: The percentage change is -20.2%.
Let's see how we can calculate this percentage: what is the percentage increase/decrease from 99 to 79? Here is a very simple step-by-step guide to find out.
Step 1: We use the following formula:
\(\text{Percentage change}\) = \({Y-X \over X} \cdot 100\%\)
• \(X = 99\)
• \(Y = 79\)
• Percentage change calculation = \({79-99 \over 99}\) = \({-20 \over 99}\) = \(-0.2020202020202\)
• \(X = 99\)
• \(Y = 79\)
• Percentage change calculation = \({79-99 \over 99}\) = \({-20 \over 99}\) = \(-0.2020202020202\)
Step 2: A percentage is a number or ratio expressed as a fraction of 100.
\(-0.202\) = \(-20.2 \over 100 \) = \(-20.2\%\)
\(Answer: \) The percentage change is -20.2%.
\(Answer: \) The percentage change is -20.2%.
Use the percentage calculator to solve other similar percentage calculation questions.
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