-49.28% is the change from 836 to 424
Calculation steps:
[( 424 - 836 ) ÷ 836] x 100 = -49.28%
Formula
Percentage change = [(424 - 836) / 836] x 100
Subtract the new number by the original number
424 - 836 = -412
-412 ÷ 836 = -0.49282296650717705
-0.49282296650717705 x 100 = -49.28%