Result updated. Increase: 25%.
Percentage change result
Main result from the values entered.
Increase
The value increased by 25%, from 100 to 125.
Starting value
100
Ending value
125
Difference
25
Ending value is 1.25x the starting value.
How this percentage change calculator works
The calculator subtracts the starting value from the ending value, then compares that difference with the starting value. It also shows the absolute difference so the result is still useful when percentage change is not finite.
Percentage increase vs percentage decrease
If the ending value is higher than the starting value, the result is labelled as an increase. If it is lower, the result is labelled as a decrease. The wording stays descriptive rather than prescriptive.
Why starting from zero is special
Percentage change divides by the starting value. When the starting value is zero, that division does not produce a finite percentage, so the calculator shows the absolute difference and a short note instead.
What this calculator does not include
This calculator does not interpret the change as tax, inflation, investment performance, financial advice or any other recommendation. It only compares the two numbers entered.
Key terms and assumptionsShort notes about the percentage change formula, zero-start handling and result direction.
- Percentage change formula
- Percentage change is the difference divided by the absolute starting value, multiplied by 100.
- Starting from zero
- Percentage change from zero is not finite. The calculator shows the absolute difference instead.
- Direction
- The result is labelled as an increase, decrease or no change based on the absolute difference.
- General math only
- This calculator does not interpret the change as financial performance, investment return or advice.
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FAQs
How do I calculate percentage change?
Subtract the starting value from the ending value, divide by the starting value, then multiply by 100.
What is the difference between percentage increase and decrease?
An increase means the ending value is higher than the starting value. A decrease means it is lower.
What happens if the starting value is zero?
Percentage change from zero is not usable as a percentage, so the calculator shows the absolute difference and a clear note instead.
Can the values be negative?
Yes. Negative values are supported, but what they mean depends on what the numbers represent.
Is percentage change the same as percentage of a number?
No. Percentage change compares two values. Percentage of a number answers what X% of Y is.
Can I copy the result?
Yes. The result summary can be copied from the calculator.
Does this calculator give financial advice?
No. It only performs a general math calculation from the values entered.