-54.09% is the change from 856 to 393
Calculation steps:
[( 393 - 856 ) ÷ 856] x 100 = -54.09%
Formula
Percentage change = [(393 - 856) / 856] x 100
Subtract the new number by the original number
393 - 856 = -463
-463 ÷ 856 = -0.5408878504672897
-0.5408878504672897 x 100 = -54.09%