574.75% is the change from 99 to 668
Calculation steps:
[( 668 - 99 ) ÷ 99] x 100 = 574.75%
Formula
Percentage change = [(668 - 99) / 99] x 100
Subtract the new number by the original number
668 - 99 = 569
569 ÷ 99 = 5.747474747474747
5.747474747474747 x 100 = 574.75%