Percentage Decrease Calculator
Use this percentage decrease calculator to find the percentage by which a value has decreased from its original amount. Enter the original value and the new, smaller value to calculate the decrease as a percentage.
Formula
Percentage Decrease = ((Original Value − New Value) ÷ Original Value) × 100
Source: Math Is Fun — Percentage Difference, Percentage Error, Percentage Change
Example
For example, if a value decreases from 80 to 60, the decrease is 20. Dividing 20 by the original value of 80 and multiplying by 100 gives a 25% decrease.
Frequently Asked Questions
- How do you calculate percentage decrease?
- Subtract the new value from the original value, divide the difference by the original value, and multiply by 100. The formula is ((Original Value − New Value) ÷ Original Value) × 100.
- What is the difference between percentage decrease and percentage change?
- Percentage decrease specifically describes a reduction from an original value to a smaller new value. Percentage change is a broader term that can describe either an increase or a decrease.
- What if the new value is larger than the original?
- If the new value is larger than the original value, the result represents a percentage increase rather than a percentage decrease.
- What is the percentage decrease from 80 to 60?
- The percentage decrease from 80 to 60 is 25%. The calculation is ((80 − 60) ÷ 80) × 100 = 25%.
- What value is used as the base when calculating percentage decrease?
- The original value is used as the base. The difference between the original and new values is divided by the original value before converting the result to a percentage.
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