Percent Increase / Decrease Calculator

Solve for initial, final, percent change, and difference—fully synced.

Inputs

Initial value Final value

Increase or decrease?

Increase Decrease

Increase (%)

Difference

Final − Initial

You can edit this field too; the others will update.

Step-by-step derivation

Enter any two fields (e.g., Initial & Percent) to see the derivation here.

References

Percent change definition: ( %Delta = 100 times frac{text{Final} - text{Initial}}{|text{Initial}|} )
Rearrangements: ( text{Final} = text{Initial},(1 pm tfrac{p}{100}) ), ( text{Initial} = frac{text{Final}}{1 pm tfrac{p}{100}} ), ( text{Difference} = text{Final} - text{Initial} ).

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