-49.3% is the change from 858 to 435
Calculation steps:
[( 435 - 858 ) ÷ 858] x 100 = -49.3%
Formula
Percentage change = [(435 - 858) / 858] x 100
Subtract the new number by the original number
435 - 858 = -423
-423 ÷ 858 = -0.493006993006993
-0.493006993006993 x 100 = -49.3%