Growth measurement workflow
Calculate a percentage increase in seconds
Salary changes, price rises, revenue growth, and cost increases are all percentage increase questions. Enter the original and new values, and the calculator returns the percentage increase with the difference and the formula.
A reliable increase calculation workflow
Consistent inputs make the percentage meaningful: always use the same base value and period.
Identify the original value
This is the base you compare against, such as last year price or salary.
Enter the new value
Type the number it increased to.
Read the result
The percentage increase appears with the difference and formula.
The formula behind the result
Percentage increase measures growth between an original value and a new value: divide the difference by the original value and multiply by 100.
The calculator shows the formula and both values, so the result is easy to verify and to explain in reports.
Why increase percentages get distorted
- Comparing values from different periods or bases
- Ignoring the absolute difference when the base is small
- Mixing percentages with percentage points
- Using the new value as the denominator by mistake
Getting the math right
- Always divide by the original value, not the new one
- Report the absolute difference alongside the percentage
- Keep the time period consistent between measurements
- Use the percentage change tool when values decrease
Frequently asked questions
How is percentage increase calculated?
Subtract the original value from the new value, divide by the original value, and multiply by 100.
What if the result is negative?
A negative result is a percentage decrease. The calculator reports it as a decrease so the sign is clear.
What if the original value is zero?
Division by zero is undefined, so the calculator asks for a non-zero original value.
Is my data stored?
No. The calculation runs locally in your browser.
Private calculation
Percentage Increase Calculator runs the math in your browser. The values you enter are never uploaded.
Open Percentage Increase Calculator