# Percentage of a Percentage Calculator

URL: https://speedycalculator.com/calculators/math/percentage-of-percentage/
Last updated: 2026-10-25

> This calculator finds a percentage of another percentage, such as 40% of 25%, by multiplying the two as decimals. It also applies the combined percentage to a number.

## Inputs

- First percentage (%)
- Second percentage (%)
- Apply to number

## Results

- Combined percentage
- Result on the number

## Formula

```
Combined % = (p₁ ÷ 100) × (p₂ ÷ 100) × 100
```

## Explanation

Percentages of percentages appear in statistics, taxes and surveys, for example 60% of the 30% of people who answered.

### How to use the Percentage of a Percentage Calculator

- **First percentage**
- **Second percentage**
- **Apply to number**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Convert each percentage to a decimal, multiply them, and convert back to a percentage.

### Inputs explained

FieldWhat to enterFirst percentageIn %Second percentageIn %Apply to numberA number

### What each result means

- **Combined percentage** = [First percentage] × [Second percentage] ÷ 100
- **Result on the number** = [Apply to number] × [Combined percentage] ÷ 100

### Example values

How the main result changes when **First percentage** changes and everything else stays at the example values above:

First percentage (%)Combined percentage (%)205307.540105012.560158020

## Worked example

Inputs — First percentage: 40 %; Second percentage: 25 %; Apply to number: 1,200.

Results — **Combined percentage = 10 %**; Result on the number = 120.

## FAQ

**Is 40% of 25% the same as 25% of 40%?**
Yes, multiplication order does not matter: both are 10%.

**How is this different from adding percentages?**
Adding gives 65%; taking a percentage of a percentage multiplies them.

**What formula does the Percentage of a Percentage Calculator use?**
Combined % = (p₁ ÷ 100) × (p₂ ÷ 100) × 100.