-79.1% is the change from 201 to 42
Calculation steps:
[( 42 - 201 ) ÷ 201] x 100 = -79.1%
Formula
Percentage change = [(42 - 201) / 201] x 100
Subtract the new number by the original number
42 - 201 = -159
-159 ÷ 201 = -0.7910447761194029
-0.7910447761194029 x 100 = -79.1%