Percentage Increase Calculator
Formula
% Increase = ((New − Old) ÷ Old) × 100
To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100.
How to use
- Enter the starting figure in the Original Value field.
- Enter the higher figure in the New Value field.
- Read the percentage increase and the difference.
Example
Going from an Original Value of 100 to a New Value of 150: (150 - 100) / 100 x 100 = 50%, a 50% increase of 50.
Frequently Asked Questions
What is the percentage increase from 100 to 150?
The percentage increase from 100 to 150 is 50%. (150 − 100) ÷ 100 × 100 = 50%.
What if the new value is less than the old value?
Then it's a decrease, not an increase. The result will be negative. Use the Percentage Decrease calculator for a positive result.
How do I reverse a percentage increase to find the original value?
Divide the new value by 1 plus the increase expressed as a decimal. If a price is $150 after a 50% increase, the original was 150 / 1.5 = $100. This is the correct way to back out a markup, and it is why you cannot simply subtract the same percentage to undo an increase.
What does a 100% increase actually mean?
A 100% increase means the value has doubled, because you are adding an amount equal to the entire original. Going from 40 to 80 is a 100% increase, and 40 to 120 is a 200% increase. People often say doubled when they mean a 100% increase, while tripled is a 200% increase.