Planning tool
Percentage Calculator
Solve common percentage, increase, decrease, and percent-change questions.
Runs in your browserResult
- Part as percent of whole
- 12.5%
- Percent of whole
- 30
- Whole after percent increase
- 230
- Whole after percent decrease
- 170
- Change from old to new
- 25%
The fields solve several common percentage questions at once; use only the pair relevant to your calculation.
How to use this percentage calculator
- Enter the original amount and the percentage, tax rate, discount, split, or comparison values that apply.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this percentage calculator
The Percentage Calculator lets you solve common percentage, increase, decrease, and percent-change questions. The controls cover only the inputs needed for the result.
You can also use it to compare results after changing one input.
Example
Enter 25 as the part and 200 as the whole to calculate 12.5 percent. You can also compare 80 and 100 to find a 25 percent increase.
Common uses
- → solve common percentage, increase, decrease, and percent-change questions
- → compare results after changing one input
- → save an estimate for planning or comparison