-28.57% is the change from 819 to 585
Calculation steps:
[( 585 - 819 ) ÷ 819] x 100 = -28.57%
Formula
Percentage change = [(585 - 819) / 819] x 100
Subtract the new number by the original number
585 - 819 = -234
-234 ÷ 819 = -0.2857142857142857
-0.2857142857142857 x 100 = -28.57%