-12.16% is the change from 666 to 585
Calculation steps:
[( 585 - 666 ) ÷ 666] x 100 = -12.16%
Formula
Percentage change = [(585 - 666) / 666] x 100
Subtract the new number by the original number
585 - 666 = -81
-81 ÷ 666 = -0.12162162162162163
-0.12162162162162163 x 100 = -12.16%