2682.61% is the change from 23 to 640
Calculation steps:
[( 640 - 23 ) ÷ 23] x 100 = 2682.61%
Formula
Percentage change = [(640 - 23) / 23] x 100
Subtract the new number by the original number
640 - 23 = 617
617 ÷ 23 = 26.82608695652174
26.82608695652174 x 100 = 2682.61%