Percentage Change
Calculate percentage change between old and new values with increase-or-decrease labels, difference highlighting, and precise decimal results instantly offline.
Change
—
More Calculators
About the author
Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .
Frequently asked questions
((new − old) ÷ old) × 100. Returns null when old is 0 and new is non-zero (undefined change).
Change is directional (old→new). Difference uses absolute average and is symmetric.
No, for informational purposes only. Consult a qualified professional.
How to use Percentage Change
- Enter old: Enter the original value.
- Enter new: Enter the new value.
- Read change: See the percent change and whether it is an increase or decrease.