Percentage Increase Calculator

Enter an original and a new value to see the percentage increase, the absolute difference and the growth multiplier. Works for prices, salaries, followers or any other quantity.

Original value

New value

Percentage increase

30%

Difference: 15
Growth multiplierNew value ÷ original value: 1.3

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How to use it

Enter the original (starting) value.
Enter the new value after the increase.
Read the percentage increase. A negative result means the value actually went down.

Examples

Pay rise

Your hourly rate rises from $20.00 to $21.50. The increase is $1.50, and 1.5 ÷ 20 × 100 = a 7.5% raise.

Price increase

A subscription goes from $9.99 to $12.99. That's a $3.00 rise, which is a 30.03% increase.

How percentage increase is calculated

Subtract the original value from the new value to get the increase, divide by the original value, then multiply by 100. The original value is always the reference point, which is why the same absolute rise is a bigger percentage when the starting number is small.

The multiplier shows how many times larger the new value is. A multiplier of 1.25 is the same as a 25% increase; 2 means the value doubled (a 100% increase).

% increase = (new − original) ÷ |original| × 100

Frequently asked questions

What if the new value is smaller than the original?

The result will be negative, which means a decrease. For a clearer answer use the percentage decrease calculator, which reports the drop as a positive percentage.

Can I calculate an increase from zero?

No. Any increase from zero is infinitely large in percentage terms, so the calculator asks for a non-zero original value.

How do I add a percentage to a number instead?

Multiply by 1 plus the percentage as a decimal. To add 8% to 250, calculate 250 × 1.08 = 270.

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More in Calculators · Last reviewed September 2026