-52.8% is the change from 856 to 404
Calculation steps:
[( 404 - 856 ) ÷ 856] x 100 = -52.8%
Formula
Percentage change = [(404 - 856) / 856] x 100
Subtract the new number by the original number
404 - 856 = -452
-452 ÷ 856 = -0.5280373831775701
-0.5280373831775701 x 100 = -52.8%