659.09% is the change from 88 to 668
Calculation steps:
[( 668 - 88 ) ÷ 88] x 100 = 659.09%
Formula
Percentage change = [(668 - 88) / 88] x 100
Subtract the new number by the original number
668 - 88 = 580
580 ÷ 88 = 6.590909090909091
6.590909090909091 x 100 = 659.09%