Percentage Calculator
Calculate what X% of Y is, or find what percentage X is of Y.
How to Calculate Percentages
A percentage represents a fraction of 100. The word itself comes from the Latin per centum, meaning "by the hundred." Percentages are used everywhere: discounts, taxes, tips, statistics, and grades.
The Formulas
| Mode | Formula | Example |
|---|---|---|
| What is X% of Y? | Result = (X / 100) × Y | 25% of 200 = 50 |
| X is what % of Y? | Result = (X / Y) × 100 | 50 is 25% of 200 |
Practical Examples
Shopping discount: A $80 item is 15% off. Savings = (15/100) × 80 = $12. You pay $68.
Test score: You got 42 out of 50. Percentage = (42/50) × 100 = 84%.
Select your calculation mode above, enter the two values, and get your answer instantly.
Frequently Asked Questions
How do I find what percentage one number is of another?
Divide the part by the whole, then multiply by 100. For example, 30 out of 120 is (30 ÷ 120) × 100 = 25%.
What is the difference between percentage and percent?
They mean the same thing. 'Percent' is the word form (25 percent), while 'percentage' refers to the concept or a specific portion expressed as a percent.
Can a percentage be more than 100%?
Yes. If a value exceeds the base, the percentage is above 100%. For example, 250 is 125% of 200.