-14.97% is the change from 668 to 568
Calculation steps:
[( 568 - 668 ) ÷ 668] x 100 = -14.97%
Formula
Percentage change = [(568 - 668) / 668] x 100
Subtract the new number by the original number
568 - 668 = -100
-100 ÷ 668 = -0.1497005988023952
-0.1497005988023952 x 100 = -14.97%