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Percentage Calculator
Three common percentage calculations in one place: find X% of a number, find what percentage one number is of another, or calculate percentage change.
100% free, no signup
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What is X% of Y?
% of
50
X is what % of Y?
is % of
12.50%
% change from X to Y
→
+25.00%
Save calculation history + export
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How to use this tool
- 1Use the first calculator to find X% of a number.
- 2Use the second to find what percentage one number is of another.
- 3Use the third to calculate percentage increase or decrease between two numbers.
- 4Unlock history saving below to keep a running log of your calculations.
Frequently asked questions
Can percentage change be negative?+
Yes, a negative result means the second number is smaller than the first — a decrease.
Percentage questions come in a few common shapes — a discount calculation, a grade calculation, or figuring out how much something has grown or shrunk — and this tool covers the three most common ones side by side so you don't have to remember which formula to use. Enter your numbers into any of the three calculators and see the result update instantly.