Percentage Change Calculator
Percent change from an original value to a new value, plus the raw difference.
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How to use Percentage Change Calculator
- Enter original, new. Leave a field blank only when the page says the value is missing.
- Read the result rows under the form. Errors appear in the status line. Nothing is uploaded.
- Rounding follows IEEE floating point in this browser unless the page says it uses integers or BigInt.
Percentage Change Calculator
Percent change
| Computes | Percent change from an original value to a new value, plus the raw difference. |
|---|---|
| Includes | Percent change |
| Includes | Raw difference |
| Engine | percentage |
| Upload | None |
| Advice | Arithmetic only |
What Percentage Change Calculator is
Percent change = 100 × (new − original) / original. 80 to 100 is +25%. A drop from 100 to 80 is −20%, not −25%, because the original is different.
The formula runs in this tab. CZNull does not receive the numbers.
How this page computes
The original cannot be 0. Increase and decrease apply a known percent to a starting amount on the increase or decrease page.
Entities and related jobs
Percent change from an original value to a new value, plus the raw difference. Named features: Percent change, Raw difference.
See also Percentage Calculator, Increase or Decrease by Percent, CAGR Calculator, ROI Calculator, Scientific Calculator, Fraction Calculator.
Use cases
Price moves, enrollment, and year-over-year counts. It is not CAGR; use CAGR when you care about a constant annual rate over years.
Limits
Invalid input appears in the status line. IEEE floating point applies unless a row says otherwise. CZNull does not receive the numbers.