Percentage Increase Calculator
Increase % = (New − Original) ÷ Original × 100(100 − 80) ÷ 80 × 100 = 25%
Free online tool
Percentage Increase Calculator
Measure how much a value grew relative to where it started.
Instant calculation
Calculate percentage increase
Compare a larger new value with the original value.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter the original
Type the value before the increase.
- 02
Enter the new value
Type the larger value after the increase.
- 03
Calculate the increase
See the percentage increase and absolute change.
The formula
How this calculation works
Subtract the original value from the new value, divide by the original value and multiply by 100.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
What is the increase from 80 to 100?
(100 − 80) ÷ 80 × 100 = 25%25% increaseWhat is the increase from 50 to 65?
(65 − 50) ÷ 50 × 100 = 30%30% increaseCommon questions
Questions about this calculation
What is the percentage increase formula?
Subtract the original value from the new value, divide by the original value, and multiply by 100.
What is the percentage increase from 80 to 100?
The increase is 25% because the difference of 20 divided by the original 80 equals 0.25.
Why must the original value be positive?
This standard percentage increase formula uses a positive original value as its baseline and divisor. For changes involving a negative baseline, use the Percentage Change Calculator.
Is percentage increase the same as absolute increase?
No. Absolute increase is New minus Original, while percentage increase compares that difference with the original value.
What if the new value is smaller?
Use the Percentage Decrease Calculator or Percentage Change Calculator when the new value is smaller than the original.
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