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25%
60 is a 25% decrease from 80
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The percentage decrease formula
Percentage decrease = (original value − new value) ÷ original value × 100
How to calculate percentage decrease
- 1.Subtract the new value from the original value to get the size of the fall.
- 2.Divide that fall by the original value.
- 3.Multiply by 100 to turn it into a percentage.
Worked example
A jacket was $80 and is now $60. What is the percentage decrease?
- The fall is 80 − 60 = 20
- 20 ÷ 80 = 0.25
- 0.25 × 100 = 25%
That is a 25% decrease, which is the same as 25% off.
A decrease and an increase of the same percent do not cancel out
Take 100, drop it by 20% to get 80, then raise that by 20% and you land on 96, not 100. The second percentage is taken from a smaller number, so it is worth less. This is why a discount followed by a price rise rarely returns to where it started.
Common questions
How do you calculate percentage decrease?
Subtract the new value from the original, divide by the original, then multiply by 100. Going from 80 to 60 is (80 − 60) ÷ 80 × 100, which is a 25% decrease.
Is percentage decrease the same as percent off?
Yes. A price reduced by 25% is 25% off. Both describe the fall measured against the original price.
Can something decrease by more than 100%?
Not if it cannot go below zero. A 100% decrease means the whole amount is gone. Figures that can go negative, such as profit, are the exception.
Other percentage calculations
How it works
The percentage decrease formula
Percentage decrease = (original value − new value) ÷ original value × 100
How to calculate percentage decrease
Subtract the new value from the original value to get the size of the fall. Divide that fall by the original value. Multiply by 100 to turn it into a percentage.
A decrease and an increase of the same percent do not cancel out
Take 100, drop it by 20% to get 80, then raise that by 20% and you land on 96, not 100. The second percentage is taken from a smaller number, so it is worth less. This is why a discount followed by a price rise rarely returns to where it started.