-41.03% is the change from 858 to 506
Calculation steps:
[( 506 - 858 ) ÷ 858] x 100 = -41.03%
Formula
Percentage change = [(506 - 858) / 858] x 100
Subtract the new number by the original number
506 - 858 = -352
-352 ÷ 858 = -0.41025641025641024
-0.41025641025641024 x 100 = -41.03%