Percentage Calculator
Find percentages, percentage change, and more — instantly.
What is _% of _?
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_ is what % of _?
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Percentage change from _ to _
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—Quick Reference
X% of Y
(X / 100) × Y X is what % of Y
(X / Y) × 100 % Change
((New − Old) / |Old|) × 100 Frequently Asked Questions
- What is 20% of 50?
- 20% of 50 is 10. You multiply 50 by 0.20 (or divide by 5) to get the answer.
- How do I calculate a percentage increase?
- Subtract the old value from the new value, divide by the old value, then multiply by 100. For example, from 80 to 100: ((100 − 80) / 80) × 100 = 25% increase.
- What is 15% of 200?
- 15% of 200 is 30. A quick trick: 10% of 200 is 20, and 5% is 10, so 15% = 30.
- How do I find what percent 45 is of 180?
- (45 / 180) × 100 = 25%. So 45 is 25% of 180.