-26.83% is the change from 861 to 630
Calculation steps:
[( 630 - 861 ) ÷ 861] x 100 = -26.83%
Formula
Percentage change = [(630 - 861) / 861] x 100
Subtract the new number by the original number
630 - 861 = -231
-231 ÷ 861 = -0.2682926829268293
-0.2682926829268293 x 100 = -26.83%