-90.19% is the change from 428 to 42
Calculation steps:
[( 42 - 428 ) ÷ 428] x 100 = -90.19%
Formula
Percentage change = [(42 - 428) / 428] x 100
Subtract the new number by the original number
42 - 428 = -386
-386 ÷ 428 = -0.9018691588785047
-0.9018691588785047 x 100 = -90.19%