-51.55% is the change from 838 to 406
Calculation steps:
[( 406 - 838 ) ÷ 838] x 100 = -51.55%
Formula
Percentage change = [(406 - 838) / 838] x 100
Subtract the new number by the original number
406 - 838 = -432
-432 ÷ 838 = -0.5155131264916468
-0.5155131264916468 x 100 = -51.55%