2750% is the change from 24 to 684
Calculation steps:
[( 684 - 24 ) ÷ 24] x 100 = 2750%
Formula
Percentage change = [(684 - 24) / 24] x 100
Subtract the new number by the original number
684 - 24 = 660
660 ÷ 24 = 27.5
27.5 x 100 = 2750%
Example