-29.35% is the change from 828 to 585
Calculation steps:
[( 585 - 828 ) ÷ 828] x 100 = -29.35%
Formula
Percentage change = [(585 - 828) / 828] x 100
Subtract the new number by the original number
585 - 828 = -243
-243 ÷ 828 = -0.29347826086956524
-0.29347826086956524 x 100 = -29.35%