-79.41% is the change from 204 to 42
Calculation steps:
[( 42 - 204 ) ÷ 204] x 100 = -79.41%
Formula
Percentage change = [(42 - 204) / 204] x 100
Subtract the new number by the original number
42 - 204 = -162
-162 ÷ 204 = -0.7941176470588235
-0.7941176470588235 x 100 = -79.41%