2207.14% is the change from 28 to 646
Calculation steps:
[( 646 - 28 ) ÷ 28] x 100 = 2207.14%
Formula
Percentage change = [(646 - 28) / 28] x 100
Subtract the new number by the original number
646 - 28 = 618
618 ÷ 28 = 22.071428571428573
22.071428571428573 x 100 = 2207.14%