-63.64% is the change from 858 to 312
Calculation steps:
[( 312 - 858 ) ÷ 858] x 100 = -63.64%
Formula
Percentage change = [(312 - 858) / 858] x 100
Subtract the new number by the original number
312 - 858 = -546
-546 ÷ 858 = -0.6363636363636364
-0.6363636363636364 x 100 = -63.64%