-53.16% is the change from 839 to 393
Calculation steps:
[( 393 - 839 ) ÷ 839] x 100 = -53.16%
Formula
Percentage change = [(393 - 839) / 839] x 100
Subtract the new number by the original number
393 - 839 = -446
-446 ÷ 839 = -0.531585220500596
-0.531585220500596 x 100 = -53.16%