The percentage difference is the difference between two values divided by the average of the two values expressed as a percentage.
Formula to calculate percentage difference.
- We begin by finding the difference of the two values.
- Then workout the average of the two values.
- Divide the difference by the average and then multiply the result by 100.
![Calculate Percentage Difference.](https://www.learntocalculate.com/wp-content/uploads/2020/06/PERCENTAGE.png)
Example:
If presented with two values 50 and 70, calculate their percentage difference.
- Lets begin by finding their difference.
![Calculate Percentage Difference.](https://www.learntocalculate.com/wp-content/uploads/2020/06/PERCENTAGE-2.png)
- Then we work out their average.
![Calculate Percentage Difference.](https://www.learntocalculate.com/wp-content/uploads/2020/06/percentage-3-1.png)
- Finally, we divide the difference by the average and then multiply the result by 100.
![Calculate Percentage Difference.](https://www.learntocalculate.com/wp-content/uploads/2020/06/percentage-4.png)
Therefore, the percentage difference of the two values is 33.3%.