Everyday calculations
Use the result as a check within this type of task, with the assumptions shown above.
MAXScanner Calculator
Percentage Increase Calculator
Calculate percentage increase or decrease between two values, with an explicit undefined result when the starting value is zero.
Live editable inputs
Change the values and see the calculation update immediately.
Formula and working
The relationship behind the answer stays visible on the page.
Assumptions visible
Rates, dimensions and limitations are kept explicit instead of hidden.
Connected next steps
Move into the next genuinely different calculation without keyword-copy pages.
-80%
100 → 20 · decrease
How to use this calculator
Percentage Increase Calculator applies the calculation described above to the values you enter. The result stays on this page so you can change inputs and compare another scenario without changing tools.
Step-by-step
- Step 1
Enter the values requested by the calculator.
- Step 2
Check the labels, units and assumptions shown.
- Step 3
Review the result before using it in another workflow.
Where this calculator is useful
Work and study checks
Use the result as a check within this type of task, with the assumptions shown above.
Planning and comparisons
Use the result as a check within this type of task, with the assumptions shown above.
Common questions
How do I use the Percentage Increase Calculator?
Enter the labeled values above the result. The calculation updates from those inputs.
Why should I check the units?
A different unit or reference value can change the meaning of the result even when the number looks similar.
What if an input is invalid?
The calculator is designed to show an explicit validation message instead of silently switching to another calculation.
Need a different calculation?
Use the calculator library to switch tasks when the question, unit or assumption changes.
Browse all calculatorsCommon percentage-change questions
percentage increasepercentage decreasepercent changechange from a starting value
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