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Percent to factor and percent changeTechnique

Technique

Percent to factor and percent change

Write any percent change as a single factor

4 min 3 steps

One move turns any percent change into a single multiplication. It's the closest thing to a skeleton key I still carry.

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The first step is free. A free account opens the rest.

Calls on

Percent means per hundredFactThe one-line fact behind every percent question

Used by

Build and analyze an exponential modelTacticPin the start and the factor; every step follows
Percent change, chains, and reverseTacticMultiply forward, divide back, never add percents
Sample estimates and margin of errorTacticScale up the sample, then read the margin as a range