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# Percentage Difference Calculator

October 2, 2023
written by Rida Mirza

In mathematics, Percentage difference is a important concept . It allows us to quantify the relative change between two values.

## Percentage Difference Formula

To calculate it, you can use the following formula:

Percentage Difference = |(New Value – Old Value) / Old Value| * 100

Where:

New Value represents the current value.

Old Value represents the previous value.

## Examples

### Example: 1

Old Value: \$500 New Value: \$600

Percentage Difference Calculation:

Percentage Difference = |(New Value – Old Value) / Old Value| * 100

Percentage Difference = |(\$600 – \$500) / \$500| * 100

Percentage Difference = |\$100 / \$500| * 100

Percentage Difference = |0.2| * 100

Percentage Difference = 20%

In this example, the percentage difference between the old value of \$500 and the new value of \$600 is 20%.

### Example: 2

Old Value: 150 New Value: 120

Percentage Difference Calculation:

Percentage Difference = |(New Value – Old Value) / Old Value| * 100

Percentage Difference = |(120 – 150) / 150| * 100

Percentage Difference = |-30 / 150| * 100

Percentage Difference = |-0.2| * 100

Percentage Difference = 20%

In this example, the percentage difference between the old value of 150 and the new value of 120 is also 20%

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