-39.04% is the change from 858 to 523
Calculation steps:
[( 523 - 858 ) ÷ 858] x 100 = -39.04%
Formula
Percentage change = [(523 - 858) / 858] x 100
Subtract the new number by the original number
523 - 858 = -335
-335 ÷ 858 = -0.39044289044289043
-0.39044289044289043 x 100 = -39.04%