Percentage Calculations: Three Common Mistakes
Check the starting value before calculating a discount, an increase, or a percentage of a total.
Read articlePercentage Calculator
Calculate percentage with Calculator 360 using the available inputs.
Try an example
These calculators may also help
How to use this calculator
For a percentage of an amount, multiply the amount by the rate and divide by 100. For an increase or decrease, multiply by 1 plus or minus the rate divided by 100.
For a ratio, divide the part by the total and multiply by 100. Percentage change compares a final value with a nonzero starting value.
Frequently asked questions
Does a 20% increase cancel a 20% decrease?
No. Reducing 100 by 20% gives 80; increasing 80 by 20% gives 96 because the base changed.