-11.52% is the change from 660 to 584
Calculation steps:
[( 584 - 660 ) ÷ 660] x 100 = -11.52%
Formula
Percentage change = [(584 - 660) / 660] x 100
Subtract the new number by the original number
584 - 660 = -76
-76 ÷ 660 = -0.11515151515151516
-0.11515151515151516 x 100 = -11.52%