-72.22% is the change from 18 to 5
Calculation steps:
[( 5 - 18 ) ÷ 18] x 100 = -72.22%
Formula
Percentage change = [(5 - 18) / 18] x 100
Subtract the new number by the original number
5 - 18 = -13
-13 ÷ 18 = -0.7222222222222222
-0.7222222222222222 x 100 = -72.22%