Increase or Decrease by Percent
Increase or decrease a number by a percent. Returns the new amount and the difference.
Rated 4.7 out of 5 based on 340 reviews
How to use Increase or Decrease by Percent
- Choose job first so the fields that apply to that job appear.
- Enter percent, starting amount. 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.
Increase or Decrease by Percent
Increase
| Computes | Increase or decrease a number by a percent. Returns the new amount and the difference. |
|---|---|
| Includes | Increase |
| Includes | Decrease |
| Engine | percentage |
| Upload | None |
| Advice | Arithmetic only |
What Increase or Decrease by Percent is
Increase: X × (1 + P/100). Decrease: X × (1 − P/100). 200 increased by 15% is 230. 200 decreased by 15% is 170. A 15% decrease then a 15% increase is not the original.
The formula runs in this tab. CZNull does not receive the numbers.
How this page computes
The difference row is new amount minus start. For a restaurant check the tip calculator also splits the bill.
Entities and related jobs
Increase or decrease a number by a percent. Returns the new amount and the difference. Named features: Increase, Decrease.
See also Percentage Calculator, What Is P Percent of X, Tip Calculator, Discount Calculator, Percentage Change Calculator, Scientific Calculator.
Use cases
Markups, markdowns, and raises. Sales tax that needs a jurisdiction table is not on this page.
Limits
Invalid input appears in the status line. IEEE floating point applies unless a row says otherwise. CZNull does not receive the numbers.