-12.76% is the change from 666 to 581
Calculation steps:
[( 581 - 666 ) ÷ 666] x 100 = -12.76%
Formula
Percentage change = [(581 - 666) / 666] x 100
Subtract the new number by the original number
581 - 666 = -85
-85 ÷ 666 = -0.12762762762762764
-0.12762762762762764 x 100 = -12.76%