To calculate the percentage increase , use the following formula:

Percentage Increase=(Final Value−Initial ValueInitial Value)×100\text{Percentage Increase}=\left(\frac{\text{Final Value}-\text{Initial Value}}{\text{Initial Value}}\right)\times 100Percentage Increase=(Initial ValueFinal Value−Initial Value​)×100

This means you:

1. Subtract the initial value from the final value to get the increase.
2. Divide the increase by the initial value.
3. Multiply the result by 100 to convert it to a percentage.

For example, if something increased from 400 to 700:

Percentage Increase=(700−400400)×100=75%\text{Percentage Increase}=\left(\frac{700-400}{400}\right)\times 100=75%Percentage Increase=(400700−400​)×100=75%

So, the value increased by 75%.