-54.55% is the change from 858 to 390
Calculation steps:
[( 390 - 858 ) ÷ 858] x 100 = -54.55%
Formula
Percentage change = [(390 - 858) / 858] x 100
Subtract the new number by the original number
390 - 858 = -468
-468 ÷ 858 = -0.5454545454545454
-0.5454545454545454 x 100 = -54.55%