-1.02% is the change from 591 to 585
Calculation steps:
[( 585 - 591 ) ÷ 591] x 100 = -1.02%
Formula
Percentage change = [(585 - 591) / 591] x 100
Subtract the new number by the original number
585 - 591 = -6
-6 ÷ 591 = -0.01015228426395939
-0.01015228426395939 x 100 = -1.02%