Back
Percentage calculator
Calculators
Loading
Loading tool
Preparing the tool. The remaining time is not yet known.
All processing for this tool happens in your browser. Your input is not sent to a server.
About this tool
Calculate percentage change, one value as a share of another, or a percentage of a value.
Common uses
- Calculate percentage change, one value as a share of another, or a percentage of a value.
- Choose Change, Share, or Percentage-of mode before entering the two numbers.
How to use it
- 1.Choose Change, Share, or Percentage-of mode before entering the two numbers.
- 2.Compare the result and supporting difference or value; 100 to 120 gives a 20% increase.
Limits and notes
- Percentage change cannot use zero as its starting value, and share cannot use a zero total. Values are bounded to magnitude 10^15, with percentage-of rates capped at magnitude 10^6.
Frequently asked questions
What does this tool do?
Calculate percentage change, one value as a share of another, or a percentage of a value.
What should I check before using the result?
Percentage change cannot use zero as its starting value, and share cannot use a zero total. Values are bounded to magnitude 10^15, with percentage-of rates capped at magnitude 10^6.