Percentage of an amount
Multiply the amount by the percentage, then divide by 100.
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Calculators
Percentage calculator
Find a percentage of an amount, compare amounts, and calculate percentage increases or decreases.
What percentage one amount is
Divide the part by the total and multiply by 100. The total cannot be zero.
Increase by a percentage
Multiply the amount by 1 plus the percentage divided by 100.
Decrease by a percentage
Multiply the amount by 1 minus the percentage divided by 100.
QUICK GUIDE
How to calculate percentages
Enter whole or decimal numbers. Use the decimal separator for your language; negative numbers are supported too.
What you can calculate
Percentage of an amount. Multiply the amount by the percentage, then divide by 100.
What percentage one amount is. Divide the part by the total and multiply by 100. The total cannot be zero.
Increase by a percentage. Multiply the amount by 1 plus the percentage divided by 100.
Decrease by a percentage. Multiply the amount by 1 minus the percentage divided by 100.
Practical examples
- 15% of 200 is 30.
- 45 out of 180 is 25%.
- Increasing 80 by 12% gives 89.6.
- Decreasing 200 by 15% gives 170.