-52.57% is the change from 856 to 406
Calculation steps:
[( 406 - 856 ) ÷ 856] x 100 = -52.57%
Formula
Percentage change = [(406 - 856) / 856] x 100
Subtract the new number by the original number
406 - 856 = -450
-450 ÷ 856 = -0.5257009345794392
-0.5257009345794392 x 100 = -52.57%