**Calculate Percentage Increase — Free calculator.**

The method for finding percentage increase or decrease is simple. We take initial value and subtract it from final value. The result is divided by the initial value and then multiplied by 100.

For e.g., initial value = 500 and Final value = 1000

Then Final Value – Initial Value = 1000 – 500 = 500

Then change/ initial value * 100, therefore 500/1000 * 100 = 50 % is the answer.