How do you calculate the percent change of 14.1 and 15.8 ?

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Answer 1 · 2017-05-27T12:01:32

See a solution process below:

The formula for calculating the percent change in a value between two points in time is:

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

Where:

#p# is the percent change - what we are solving for in this problem.

#N# is the New Value - 15.8 in this problem.

#O# is the Old Value - 14.1 in this problem.

Substituting and solving for #p# gives:

#p = (15.8 - 14.1)/14.1 *100%#

#p = 1.7/14.1 *100%#

#p = (170/14.1)%#

#p = 12.1%# rounded to the nearest tenth.

The percent change is: #color(red)(12.1%)# rounded to the nearest tenth.

Answer 2 · 2017-05-27T12:07:35

#10.8%#

To calculate percent change, use the formula

#("new number"-"old number")/("old number")xx100%#

If the top is negative, then you have a percent decrease. If the top is positive, then you have a percent increase.

Assuming 14.1 is the old number and 15.8 is the new number, we can calculate

#(15.8-14.1)/(15.8)=1.7/15.8=0.108#

#0.108xx100%=10.8%#