Percentage Calculator
Solve any percentage problem in seconds: X% of Y, X is what % of Y, and % change.
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Your Results
Result30
Expression15% of 200
Simple percent math — no sign-up, no data stored.
Frequently Asked Questions
How do I calculate X% of Y?
Multiply X by Y and divide by 100. Example: 15% of 200 = (15 × 200) ÷ 100 = 30.
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value, and multiply by 100.
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