-28.75% is the change from 821 to 585
Calculation steps:
[( 585 - 821 ) ÷ 821] x 100 = -28.75%
Formula
Percentage change = [(585 - 821) / 821] x 100
Subtract the new number by the original number
585 - 821 = -236
-236 ÷ 821 = -0.2874543239951279
-0.2874543239951279 x 100 = -28.75%