-53.34% is the change from 838 to 391
Calculation steps:
[( 391 - 838 ) ÷ 838] x 100 = -53.34%
Formula
Percentage change = [(391 - 838) / 838] x 100
Subtract the new number by the original number
391 - 838 = -447
-447 ÷ 838 = -0.5334128878281623
-0.5334128878281623 x 100 = -53.34%