-88.68% is the change from 159 to 18
Calculation steps:
[( 18 - 159 ) ÷ 159] x 100 = -88.68%
Formula
Percentage change = [(18 - 159) / 159] x 100
Subtract the new number by the original number
18 - 159 = -141
-141 ÷ 159 = -0.8867924528301887
-0.8867924528301887 x 100 = -88.68%