Percentage Increase Calculator

Enter an original value and a new value to find the percentage increase. The calculator shows the result, formula, and calculation steps.

Calculate percentage increase

Example: Find the percentage increase from 80 to 100

How to calculate percentage increase

Subtract the original value from the new value. Then divide the difference by the original value and multiply by 100.

Percentage increase formula

(new value − original value) ÷ original value × 100

The original value is the baseline for the calculation. If the new value is lower than the original value, use a percentage decrease calculator instead.

Examples

Price rises from $80 to $100

A product price increases from $80 to $100.

Calculation: (100 − 80) ÷ 80 × 100 = 25%

Answer: The price increased by 25%.

Subscribers grow from 500 to 650

An email list grows from 500 subscribers to 650 subscribers.

Calculation: (650 − 500) ÷ 500 × 100 = 30%

Answer: The subscriber count increased by 30%.

Inventory rises from 1,200 to 1,380 units

A business increases its inventory from 1,200 units to 1,380 units.

Calculation: (1,380 − 1,200) ÷ 1,200 × 100 = 15%

Answer: Inventory increased by 15%.

Frequently asked questions

How do I calculate a percentage increase?

Subtract the original value from the new value, divide the result by the original value, and multiply by 100.

What is the percentage increase from 80 to 100?

The difference is 20. Divide 20 by the original value of 80, then multiply by 100. The percentage increase is 25%.

Can the original value be zero?

No. Percentage increase cannot be calculated from a zero original value because the formula requires division by the original value.

What if the new value is lower than the original value?

That is a percentage decrease rather than an increase. The calculator will identify it as a decrease and link you to the relevant tool.