2708.7% is the change from 23 to 646
Calculation steps:
[( 646 - 23 ) ÷ 23] x 100 = 2708.7%
Formula
Percentage change = [(646 - 23) / 23] x 100
Subtract the new number by the original number
646 - 23 = 623
623 ÷ 23 = 27.08695652173913
27.08695652173913 x 100 = 2708.7%