-9.4% is the change from 585 to 530
Calculation steps:
[( 530 - 585 ) ÷ 585] x 100 = -9.4%
Formula
Percentage change = [(530 - 585) / 585] x 100
Subtract the new number by the original number
530 - 585 = -55
-55 ÷ 585 = -0.09401709401709402
-0.09401709401709402 x 100 = -9.4%