Understand the idea
A percentage change compares the difference with the starting amount. Using the ending amount as the denominator answers a different question.
Calculate a percentage change
A percentage change compares the difference with the starting amount. Using the ending amount as the denominator answers a different question.
Inside this edition
One topic. 3 useful perspectives.
3 sections
Context
Put it into practice
Subtract the starting value from the ending value, divide by the starting value and multiply by 100. A move from 80 to 100 is a 25% increase.
Know the limits
Percentage change from a zero starting value is undefined under this formula.
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