Percentage Calculator

Calculate percentages, percentage of a total and percentage change in one step. Free online percentage calculator.

What is % of ?30

is what % of ?25%

% change from to 25%

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What is the percentage calculator?

Work out what X% of a number is, what percentage one number is of another, and the percentage increase or decrease between two values.

How to use the Percentage Calculator

Pick the type of calculation.
Enter your two numbers.
Read the result instantly.

Common uses

Calculating discounts and sale prices
Working out tips and tax
Measuring growth between two periods

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. For example, 25% of 200 = 200 × 25 ÷ 100 = 50.

How is percentage change calculated?

Subtract the old value from the new value, divide by the old value and multiply by 100.

Can the result be negative?

Yes. A negative percentage change means a decrease.

Also known as: percent calculator, percentage change calculator, percentage increase calculator, percentage decrease calculator, what percent of, percent of a number.

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