Percentage Calculator
Calculate percentages, percentage change, and what-percent-of
Fill in any two boxes and leave one empty: the empty one is worked out for you.
Solved for the result:
20 ÷ 100 × 150
Worked steps
1. Turn percent into a decimal
percent / 100
Using percent = 20
Result: 0.2
2. Multiply by the number
decimal x number
Using decimal = 0.2; number = 150
Result: 30
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About Percentage Calculator
Six percentage calculations in one place: finding a percentage of a number, figuring out what percentage one number is of another, and calculating percentage change between two values, plus raising or lowering a number by a percentage, working backwards to an original price, and the percentage difference between two numbers.
Pick the calculation you need from the tabs, enter your numbers, and the result appears instantly as you type.
Percentage change and percentage difference are often confused — this tool's "% change" tab specifically measures how much a value increased or decreased relative to its starting point, which is usually what people actually mean by "percent change."
Watch: Percentage Calculator in Action
- What's the difference between percentage change and percentage difference?
- These are often confused — the "% change" tab specifically measures how much a value increased or decreased relative to its starting point, which is usually what people actually mean by "percent change," as distinct from a symmetric percentage difference calculation.
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