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Percentage Calculator
Calculate percentages quickly and easily!
%of
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Frequently Asked Questions
▶How do I calculate a percentage?
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 ÷ 100 = 30.
▶How is percentage change calculated?
Percentage change = ((New - Old) / Old) × 100. A positive result means increase, negative means decrease.
▶What's the difference between adding and subtracting a percentage?
Adding 20% to 100 gives 120, while subtracting 20% from 100 gives 80. The percentage is always calculated from the original value.
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