-53.23% is the change from 836 to 391
Calculation steps:
[( 391 - 836 ) ÷ 836] x 100 = -53.23%
Formula
Percentage change = [(391 - 836) / 836] x 100
Subtract the new number by the original number
391 - 836 = -445
-445 ÷ 836 = -0.5322966507177034
-0.5322966507177034 x 100 = -53.23%