Percentage Increase Calculator

Q: How do you calculate percentage increase?

Use ((new − original) ÷ original) × 100.

Q: What if the original value is 0?

The standard percent increase formula is not defined; consider using the absolute difference or a different metric.

Q: Can percentage increase be over 100%?

Yes—if the new value is more than double the original.

Use this percentage increase calculator to find how much a value has increased from an original number to a new number. It’s helpful for price changes, salary raises, growth metrics, test scores, budgeting, and comparing any “before vs after” numbers.

Enter the original value and the new value, and the calculator will output the percentage increase instantly. You’ll also see the underlying steps so you can understand the result or replicate it in a spreadsheet.

The standard formula for percentage increase is: Percentage increase = ((new − original) ÷ original) × 100. If the original value is zero, a percentage increase isn’t defined in the usual way—this page should show a clear message and suggest using a difference instead.

For related tools, see percentage decrease, percentage change, and percentage difference.

Formula

((new − original) ÷ original) × 100

Examples

From 50 to 60: ((60 − 50) ÷ 50) × 100 = 20%
From 80 to 100: ((100 − 80) ÷ 80) × 100 = 25%

Quick reference table

(Add a small table: original/new pairs → % increase.)

FAQ

How do you calculate percentage increase?

Use ((new − original) ÷ original) × 100.

What’s the difference between percent increase and percent change?

Percent increase applies when the value goes up; percent change can be up or down.

What if the original value is 0?

The standard percent increase formula is not defined; consider using the absolute difference or a different metric.

Can percentage increase be over 100%?

Yes—if the new value is more than double the original.