-26.57% is the change from 858 to 630
Calculation steps:
[( 630 - 858 ) ÷ 858] x 100 = -26.57%
Formula
Percentage change = [(630 - 858) / 858] x 100
Subtract the new number by the original number
630 - 858 = -228
-228 ÷ 858 = -0.26573426573426573
-0.26573426573426573 x 100 = -26.57%