Money calculator
Percentage change calculator
Calculate the percentage increase or decrease from an original value to a new value.
Formula and example
Percentage change = (new value − original value) ÷ original value × 100. A negative answer is a decrease.
Worked example
A change from 80 to 100 is a 25% increase: (100 − 80) ÷ 80 × 100.
Assumptions and limits
The original value must be above zero. Results are relative to that original value; percentage changes are not symmetric when values are reversed.
Privacy
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