-74.39% is the change from 164 to 42
Calculation steps:
[( 42 - 164 ) ÷ 164] x 100 = -74.39%
Formula
Percentage change = [(42 - 164) / 164] x 100
Subtract the new number by the original number
42 - 164 = -122
-122 ÷ 164 = -0.7439024390243902
-0.7439024390243902 x 100 = -74.39%