-66.59% is the change from 856 to 286
Calculation steps:
[( 286 - 856 ) ÷ 856] x 100 = -66.59%
Formula
Percentage change = [(286 - 856) / 856] x 100
Subtract the new number by the original number
286 - 856 = -570
-570 ÷ 856 = -0.6658878504672897
-0.6658878504672897 x 100 = -66.59%