Math · NUMORA
Percentage Change Calculator
How much something moved from old to new.
Open interactive calculatorHow to use
(new−old)/old.
Formula
Δ% = (new − old) / old
FAQ
Is this Percentage Change calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
(new−old)/old.
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