Question

Find the percent of change if the original cost was $5 and the new cost is $1.

Decrease 80%
Decrease 400%
Increase $4
Decrease $4

Answer 1

Decrease 80%

Explanation:

`percentage \: change \\ = (5 - 1)/(5) * 100 \\ \\ = (4)/(5) * 100 \\ \\ = 4 * 20 \\ \\ = 80\% \\`

Since, new cost is less than the original cost, hence there will be a decrease of 80%.