-11.36% is the change from 660 to 585
Calculation steps:
[( 585 - 660 ) ÷ 660] x 100 = -11.36%
Formula
Percentage change = [(585 - 660) / 660] x 100
Subtract the new number by the original number
585 - 660 = -75
-75 ÷ 660 = -0.11363636363636363
-0.11363636363636363 x 100 = -11.36%