Q: Last year, Emmy was 40 inches tall. This year, she is 42 inches tall. By what percent has her height increased?
Answer: 5%
Explanation: Percent change is calculated by the following formula:
(New – Original)/Original x 100%
(42 – 40)/40 = 2/40 = .05
.05 x 100% = 5%
Since it is positive, this is a percent increase.
My TI-84 Plus program PRCNTCHG will calculate this, too.
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