-42.07% is the change from 858 to 497
Calculation steps:
[( 497 - 858 ) ÷ 858] x 100 = -42.07%
Formula
Percentage change = [(497 - 858) / 858] x 100
Subtract the new number by the original number
497 - 858 = -361
-361 ÷ 858 = -0.42074592074592077
-0.42074592074592077 x 100 = -42.07%