-88.61% is the change from 158 to 18
Calculation steps:
[( 18 - 158 ) ÷ 158] x 100 = -88.61%
Formula
Percentage change = [(18 - 158) / 158] x 100
Subtract the new number by the original number
18 - 158 = -140
-140 ÷ 158 = -0.8860759493670886
-0.8860759493670886 x 100 = -88.61%