-49.17% is the change from 842 to 428
Calculation steps:
[( 428 - 842 ) ÷ 842] x 100 = -49.17%
Formula
Percentage change = [(428 - 842) / 842] x 100
Subtract the new number by the original number
428 - 842 = -414
-414 ÷ 842 = -0.4916864608076009
-0.4916864608076009 x 100 = -49.17%