-61.54% is the change from 858 to 330
Calculation steps:
[( 330 - 858 ) ÷ 858] x 100 = -61.54%
Formula
Percentage change = [(330 - 858) / 858] x 100
Subtract the new number by the original number
330 - 858 = -528
-528 ÷ 858 = -0.6153846153846154
-0.6153846153846154 x 100 = -61.54%