-46.58% is the change from 161 to 86
Calculation steps:
[( 86 - 161 ) ÷ 161] x 100 = -46.58%
Formula
Percentage change = [(86 - 161) / 161] x 100
Subtract the new number by the original number
86 - 161 = -75
-75 ÷ 161 = -0.4658385093167702
-0.4658385093167702 x 100 = -46.58%