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

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

$0.108xx100%=10.8%$