-47.9% is the change from 858 to 447
Calculation steps:
[( 447 - 858 ) ÷ 858] x 100 = -47.9%
Formula
Percentage change = [(447 - 858) / 858] x 100
Subtract the new number by the original number
447 - 858 = -411
-411 ÷ 858 = -0.479020979020979
-0.479020979020979 x 100 = -47.9%