How do you calculate the percent change of 24 to 21?

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Answer 1 · 2017-02-27T03:05:28

See the entire solution process below:

The formula for change in percent is:

#p = (N - O)/O * 100#

Where:
#p# is the percentage change.
#N# is the New Value - 21 for this problem
#O# is the Old Value - 24 for this problem

Substituting and calculating gives:

#p = (21 - 24)/24 * 100#

#p = -3/24 * 100#

#p = -300/24#

#p = 12.5#

The change was 12.5%