-48.93% is the change from 838 to 428
Calculation steps:
[( 428 - 838 ) ÷ 838] x 100 = -48.93%
Formula
Percentage change = [(428 - 838) / 838] x 100
Subtract the new number by the original number
428 - 838 = -410
-410 ÷ 838 = -0.4892601431980907
-0.4892601431980907 x 100 = -48.93%