-53.35% is the change from 836 to 390
Calculation steps:
[( 390 - 836 ) ÷ 836] x 100 = -53.35%
Formula
Percentage change = [(390 - 836) / 836] x 100
Subtract the new number by the original number
390 - 836 = -446
-446 ÷ 836 = -0.5334928229665071
-0.5334928229665071 x 100 = -53.35%