Percentage Increase Calculator
Work out the percentage increase between a starting value and a final value, or increase a number by a chosen percentage. Handy for price rises, pay increases and growth figures.
If the final value is lower than the starting value, the result is a decrease.
The percentage increase formula
Percentage Increase = ((New Value − Original Value) ÷ Original Value) × 100
- Subtract the original value from the new value to find the amount of the increase.
- Divide that increase by the original value so it is measured against the starting point, not the new value.
- Multiply by 100 to turn that fraction into a percentage.
How to use this calculator
- Pick “Between two values” to compare a starting and final value, or “Increase by a %” to add a percentage to a number.
- Enter your values — for example, a price rising from £80 to £92.
- The percentage increase and the amount of the increase appear instantly.
Worked examples
Price increase percentage
A product rises from £80 to £92. Increase = 92 − 80 = 12. Percentage increase = 12 ÷ 80 × 100 = 15%. The price went up 15%.
Salary increase
Your pay rises from £32,000 to £34,560. Increase = 34,560 − 32,000 = 2,560. Percentage increase = 2,560 ÷ 32,000 × 100 = 8%. That is an 8% pay rise.
Increase from one number to another
A meter reading moves from 4,200 to 4,641. Increase = 4,641 − 4,200 = 441. Percentage increase = 441 ÷ 4,200 × 100 = 10.5%.
Percentage increase in sales
Monthly revenue climbs from £15,000 to £18,000. Increase = 18,000 − 15,000 = 3,000. Percentage increase = 3,000 ÷ 15,000 × 100 = 20%. Sales grew 20%.
An increase over 100%
A newsletter list grows from 400 to 920 subscribers. Increase = 920 − 400 = 520. Percentage increase = 520 ÷ 400 × 100 = 130%. The list more than doubled, so the increase is over 100%.
Percentage increase, percentage change and percentage difference
These three are easy to mix up. Here is the difference, in plain English.
- Percentage increase
- How much a value has gone up, expressed as a percentage of the original. Use it when you have a clear starting value and a higher new value.
- Percentage change
- Covers both increases and decreases in a single figure — a positive result is an increase, a negative result is a decrease. Use the percentage change calculator when the direction is not known in advance.
- Percentage difference
- Compares two values without treating either as the starting point. It uses the average of the two as the base, so it is useful when neither number is clearly the original.