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Percentage Calculator
Calculate percentages, find what percent a number is of another, and percentage change.
How to Use the Percentage Calculator
- Select the calculation type (What is % of, % is what of, or % Change).
- Enter the required values in the input fields.
- Click Calculate to see the result instantly.
- Results update in real-time with clear labels.
Formula & Method
What is P% of X?Y = (P / 100) × X
Y is what % of X?P = (Y / X) × 100
Percentage Change:Change = ((New - Old) / |Old|) × 100
Examples
| Scenario | Input | Result |
|---|---|---|
| What is 15% of 200? | 15% of 200 | 30 |
| 30 is what % of 150? | 30 of 150 | 20% |
| % change from 100 to 150 | 100 → 150 | 50% increase |
Frequently Asked Questions
What is a percentage?
A percentage is a number or ratio expressed as a fraction of 100.
Can I calculate percentage decrease?
Yes, use the Percentage Change tab for increase or decrease.
Why is my result negative?
A negative percentage change means the new value is smaller than the original.
People Also Ask
How do you calculate percentage increase?
Subtract the original value from the new value, divide by the original, and multiply by 100.
What is 20% of 50?
20% of 50 equals 10.
How to find what percent one number is of another?
Divide the first number by the second and multiply by 100.