How this Percentage Increase Calculator works
Percentage increase measures how much a value has grown relative to its starting point.
Formula
((New − Original) ÷ Original) × 100
Worked example
A change from 80 to 100 is an increase of 25%.
How to interpret the result
Positive values indicate growth; negative values indicate decline.
Common mistakes and limits
A zero original value cannot be a percentage baseline.
Frequently asked questions
What if the original value is zero?
A percentage increase from zero is undefined because the formula divides by the original value.
Important note
WorkTools provides general-purpose informational calculations. Verify inputs, definitions, policies and jurisdiction-specific requirements before using a result for financial, payroll, legal or other consequential decisions.