2285.71% is the change from 28 to 668
Calculation steps:
[( 668 - 28 ) ÷ 28] x 100 = 2285.71%
Formula
Percentage change = [(668 - 28) / 28] x 100
Subtract the new number by the original number
668 - 28 = 640
640 ÷ 28 = 22.857142857142858
22.857142857142858 x 100 = 2285.71%