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Percentage Points versus Percent Change
Grade Level
PSAT Prep
113 Percentage Points versus Percent Change
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A rate changed from 18% to 12%. A student calculated 6/12 = 50% and said the rate decreased by 50%. What error did the student make?
A
The student used the new percentage as the base instead of the original 18%.
B
The student should have divided by 30 because 18 + 12 = 30.
C
The student subtracted the percentages instead of adding them.
D
The student found percentage points but labeled them as percent change.
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