Percentage Calculator
calc.percent

Percentage Calculator

Three ways to work with percentages — pick the shape of the question you have, fill in the blanks, and the answer updates as you type.

% of =
Result —
0Y
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is what % of ?
Result — %
0%100%
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From to
Change —
startend
How this works
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Frequently asked questions

Quick answers to the questions people ask most about percentages.

How do I calculate a percentage of a number?

Turn the percentage into a decimal by dividing it by 100, then multiply that decimal by the number. For example, 20% of 150 is (20 ÷ 100) × 150 = 30.

How do I find what percentage one number is of another?

Divide the part by the whole, then multiply by 100. For example, to find what percent 30 is of 150: (30 ÷ 150) × 100 = 20%.

How do I calculate percentage increase or decrease?

Subtract the original value from the new value, divide that difference by the original value, then multiply by 100. A positive result is an increase; a negative result is a decrease.

What's the difference between percentage points and percent?

A percentage point is the simple difference between two percentages (going from 20% to 25% is a 5 percentage point increase), while a percent change measures that difference relative to the starting value (a 25% increase, since 5 is 25% of 20).

How do I convert a percentage to a decimal?

Divide the percentage by 100. For example, 45% becomes 0.45. To go the other way, multiply a decimal by 100 to get a percentage.

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