Percentage difference = |A - B| / ((A + B)/2) * 100

Free online percentage difference calculator – Find the percentage difference between two numbers

## What is a Percentage difference?

Percentage difference measures how much two numbers differ, expressed as a percentage. It is calculated by dividing the absolute difference between |a-b| the two numbers by the average of the two numbers and multiplying by 100.

## Percentage difference formula

The formula for calculating the percentage difference is as follows:

**PD = |A – B| / ((A + B)/2) * 100**

- PD = percentage difference
- A = first value
- B = second value

## Solved Example

Example – Suppose you have two values: First value = 80, Second value = 60

To find the percentage difference between these two values

Given,

- A = first value = 80
- B = second value = 60

Step 1: Values to compare are 80 and 60.

Step 2: Difference = A – B = 80 – 60 = 20

Step 3: Absolute value of the difference = |A – B| = |20| = 20

Step 4: Average of the two values = (A + B) /2 = (80 + 60) / 2 = 140 / 2 = 70

Step 5: Percentage difference = |A – B| / ((A + B)/2) = 20 / 70 = 0.2857

Step 6: Percentage difference = |A – B| / ((A + B)/2) * 100 = 0.2857 * 100 = 28.57%

So, the percentage difference between 80 and 60 is approximately 28.57%.

## Percentage difference table

First value | Second Value | Percentage difference |
---|---|---|

2 | 5 | 85.714 % |

1.9 | 3.8 | 66.667 % |

3.8 | 10.9 | 96.599 % |

10 | 15 | 40.000 % |

20 | 35 | 54.545 % |

40 | 60 | 40.000 % |

55 | 65 | 16.667 % |

65 | 50 | 26.087 % |

80 | 75 | 6.452 % |