-88.82% is the change from 161 to 18
Calculation steps:
[( 18 - 161 ) ÷ 161] x 100 = -88.82%
Formula
Percentage change = [(18 - 161) / 161] x 100
Subtract the new number by the original number
18 - 161 = -143
-143 ÷ 161 = -0.8881987577639752
-0.8881987577639752 x 100 = -88.82%