What percentage change means
Percentage change compares a new value with an original value. It tells you whether something increased, decreased, or stayed the same, and by how much relative to the original.
Increase
The new value is greater than the original value.
Decrease
The new value is smaller than the original value.
No change
The values are identical, so the change is zero.
Formula and interpretation
The calculator uses the same percentage change formula that appears in finance, growth analysis, and price comparisons.
Percentage Change = ((New - Original) / Original) × 100
How to read the output
The arrow tells you whether the value went up or down.
Difference shows the absolute change in units, not percent.
Percent of original shows the new value relative to the original base.
When this tool is useful
Business growth
Compare revenue, users, or traffic over time.
Metrics tracking
See how KPIs change between reporting periods.
Price drops
Measure discounts or markdowns quickly.
Comparisons
Understand changes across versions, cohorts, or periods.
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Frequently Asked Questions
Yes. The calculator detects both increase and decrease automatically.