This percentage change calculator performs 3 types of calculations: percentage increase or decrease change from one no. (A1) to another (A2), percentage difference and applying/extracting a percent to/from a given value. You can read more about it below the tool.

## How does this percentage change calculator work?

This math form can be used when trying to solve any problem that requires any of the following 3 calculation types:

■ Determining the relative change which can be either an increase or decrease from an initial number to a reference or final number. This operation can be performed in 1^{st} tab;

■ Finding the percentage difference which refers to the relative difference between two given numbers. The 2^{nd} tab can handle such problem;

■ Other percentage calculations like finding what is the absolute value of a percent applied to a specific number or what percent is a number from another number. These two can be done in 3^{rd} tab.

When computing all these common math operations, the algorithm of this percentage change calculator applies the formulas explained below:

■ % Change = (A2 – A1)/A1]*100

■ % Difference = ( | A_{1} - A_{ 2} | / ((A_{ 1} + A_{ 2})/2) ) * 100

■ Absolute value by applying a % = % * Given value

■ % value of a number in another number = A1/A2*100

Where:

A1 = first given number

A2 = second given number

## Example of few calculations

1. What is the relative change from 125 to 199?

Answer: Percentage Increase = +59.20%

2. What is the percentage difference between 55 and 141?

Answer: Percentage difference = 45.6790%

3. What is 5.55% of $150?

Answer: $8.33

4. What percent is 10 from 100?

Answer: 10%.

08 Apr, 2015