20% of 500
100
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About the Percentage Calculator
Solve the three most common percentage questions: what is X% of Y, X is what percent of Y, and the percentage change from one number to another. It is handy for exam marks, salary increments, profit margins, interest and price changes.
How to use the Percentage Calculator
- Choose calculation type from the dropdown.
- Enter values X and Y as prompted.
- Read the computed answer in the results area.
Tips
- Modes: what is X% of Y, X is what % of Y, and percent increase/decrease.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 13% of Rs 5,000 is 5,000 × 13 ÷ 100 = Rs 650.
How do I find what percent one number is of another?
Divide the first number by the second and multiply by 100. For example, 450 marks out of 600 is 450 ÷ 600 × 100 = 75%.
How do I calculate percentage increase or decrease?
Subtract the old value from the new value, divide by the old value and multiply by 100. A salary rising from Rs 40,000 to Rs 46,000 is a (46,000 − 40,000) ÷ 40,000 × 100 = 15% increase.