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Percentage Calculator (Increase/Decrease/What%/X% of Y)

Calculate X% of Y, what percent one value is of another, and percentage increases or decreases—then copy a shareable result link.

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FAQ

How do you compute X% of Y?

Convert the percent to a decimal and multiply by the base value. Example: 20% of 150 = 150 × (20 ÷ 100) = 30.

How do you calculate percent increase or decrease?

For an increase use Y × (1 + X ÷ 100); for a decrease use Y × (1 - X ÷ 100). X is the percent change and Y is the original value.

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