-85.71% is the change from 161 to 23
Calculation steps:
[( 23 - 161 ) ÷ 161] x 100 = -85.71%
Formula
Percentage change = [(23 - 161) / 161] x 100
Subtract the new number by the original number
23 - 161 = -138
-138 ÷ 161 = -0.8571428571428571
-0.8571428571428571 x 100 = -85.71%