-83.23% is the change from 161 to 27
Calculation steps:
[( 27 - 161 ) ÷ 161] x 100 = -83.23%
Formula
Percentage change = [(27 - 161) / 161] x 100
Subtract the new number by the original number
27 - 161 = -134
-134 ÷ 161 = -0.8322981366459627
-0.8322981366459627 x 100 = -83.23%