Percentage Increase Calculator
Growth or decline between two values, in percent.
Enter your values
Enter the original value you are working with.
Enter the new value you are working with.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Percentage increase
- 24%
- Absolute change
- 60
- Multiplier
- 1.24×
- Reverse: to undo this change
- -19.3548%
Working
- 1(310 − 250) ÷ 250 × 100 = 24%
Quick answer
Percentage increase is (new − old) ÷ old × 100; a negative result is a percentage decrease.
% change = (new − old) ÷ |old| × 100
At a glance
| What it does | Growth or decline between two values, in percent. |
|---|---|
| Category | Math |
| Inputs needed | Original value, New value |
| Main output | Percentage increase |
| Formula | % change = (new − old) ÷ |old| × 100 |
| Cost | Free — no sign-up, no download |
How to use the Percentage Increase Calculator
- 1Enter the original value.
- 2Enter the new value.
- 3Read the percentage change and multiplier.
Inputs explained
- Original value
- Enter the original value you are working with.
- New value
- Enter the new value you are working with.
Worked example
Using the values the calculator loads with:
Inputs
- Original value250
- New value310
Results
- Percentage increase24%
- Absolute change60
- Multiplier1.24×
- Reverse: to undo this change-19.3548%
- (310 − 250) ÷ 250 × 100 = 24%
Frequently asked questions
Why isn't a 50% rise undone by a 50% fall?
The fall applies to a bigger base. 100 → 150 → 75, so you need a 33.3% fall to return to 100.
Can percentage change exceed 100%?
Yes for increases — tripling is +200%. Decreases cannot exceed −100% because a value cannot fall below zero from a positive base.
What do I need to enter into the Percentage Increase Calculator?
Just 2 values: original value, new value. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Percentage Increase Calculator work out the answer?
Percentage increase is (new − old) ÷ old × 100; a negative result is a percentage decrease. It applies the formula % change = (new − old) ÷ |old| × 100 and shows the working so you can check each step by hand.
Is the Percentage Increase Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.