-11.98% is the change from 668 to 588
Calculation steps:
[( 588 - 668 ) ÷ 668] x 100 = -11.98%
Formula
Percentage change = [(588 - 668) / 668] x 100
Subtract the new number by the original number
588 - 668 = -80
-80 ÷ 668 = -0.11976047904191617
-0.11976047904191617 x 100 = -11.98%