Percentage Increase Calculator
Work out percentage increase and decrease in four different ways: the change between two values, applying a percentage to a number, finding the original value before a change, and chaining several changes together.
The four modes
Change between two values answers "what percentage did this go up or down by?". Apply a change answers "what is 150 increased by 12%?". Reverse finds the starting value when you only know the final value and the percentage that was applied. Successive changes compounds several increases and decreases in order — which is where the common mistake of simply adding the percentages shows up.
- Percentage change between two values
- Apply an increase or decrease to a value
- Reverse: recover the original value
- Chain multiple changes in sequence
- Step-by-step working for every mode
A common trap
A 10% rise followed by a 10% fall does not return you to where you started — it leaves you 1% below, because the second change is calculated on the larger intermediate value. The successive-changes mode shows exactly this effect.
Related Calculators
You might also need
Tools from other categories that people pair with the Percentage Change: