-58.62% is the change from 858 to 355
Calculation steps:
[( 355 - 858 ) ÷ 858] x 100 = -58.62%
Formula
Percentage change = [(355 - 858) / 858] x 100
Subtract the new number by the original number
355 - 858 = -503
-503 ÷ 858 = -0.5862470862470862
-0.5862470862470862 x 100 = -58.62%