This guide provides a step-by-step guide on how to calculate percentage decrease. It includes a formula and an example with detailed calculations.

## Calculate Percentage Increase

To find the percentage decrease, subtract the final value from the initial value, divide the difference by the initial value, and then multiply by 100%.

### Percentage Decrease Formula

Percent Decrease = ((Initial Value – Final Value) / Initial Value) * 100%

**Example:**

- Initial Value = 100
- Final Value = 80
- Subtract Final Value from Initial Value: 100 – 80 = 20
- Divide the Difference by Initial Value: 20 / 100 = 0.2
- Multiply by 100%: 0.2 * 100% = 20%

So, the percentage decrease is 20%.

## Percentage Increase Calculator

To calculate percentage decrease, go to Percentage increase decrease calculator. Enter initial value in “**from**” input field and final value in “**to**” input field. Calculator automatically display percent decrease value.

Check out helpful percentage calculators: Calculators, Percentage Calculator