Percentage
Calculate what x% of y is, what percentage a is of b, and the percentage change from A to B.
Open calculatorPercentage change
Percentage change = (new value − starting value) / starting value × 100%. Moving from 80 to 100 is a +25% increase.
Percentage change
25%
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A drop from 100 to 80 is −20%, whereas climbing back from 80 to 100 requires a +25% gain.
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Educational estimate only. Not medical, tax, legal or financial advice.