-22.55% is the change from 856 to 663
Calculation steps:
[( 663 - 856 ) ÷ 856] x 100 = -22.55%
Formula
Percentage change = [(663 - 856) / 856] x 100
Subtract the new number by the original number
663 - 856 = -193
-193 ÷ 856 = -0.22546728971962618
-0.22546728971962618 x 100 = -22.55%