-12.61% is the change from 666 to 582
Calculation steps:
[( 582 - 666 ) ÷ 666] x 100 = -12.61%
Formula
Percentage change = [(582 - 666) / 666] x 100
Subtract the new number by the original number
582 - 666 = -84
-84 ÷ 666 = -0.12612612612612611
-0.12612612612612611 x 100 = -12.61%