Question

Find the absolute change and the percentage change for the given situation.120 is decreased to 18

Answer 1

The absolute change is defined as:

`V_2-V_1`

where V1 and V2 are the initial and final values, respectively.

Plugging the values given we have that:

`18-120=-102`

Therefore the absolute change is -102. (The minues sign indicate a decrease)

The percentage change is given by:

`(V_2-V_1)/(\lvert V_1\rvert)\cdot100`

plugging the values given we have:

`(18-120)/(\lvert120\rvert)\cdot100=-(102)/(120)\cdot100=-0.85\cdot100=85`

Therefore the percentage change is -85% (Once again the minus sign indicate a decrease)