-45.96% is the change from 161 to 87
Calculation steps:
[( 87 - 161 ) ÷ 161] x 100 = -45.96%
Formula
Percentage change = [(87 - 161) / 161] x 100
Subtract the new number by the original number
87 - 161 = -74
-74 ÷ 161 = -0.45962732919254656
-0.45962732919254656 x 100 = -45.96%