2575% is the change from 24 to 642
Calculation steps:
[( 642 - 24 ) ÷ 24] x 100 = 2575%
Formula
Percentage change = [(642 - 24) / 24] x 100
Subtract the new number by the original number
642 - 24 = 618
618 ÷ 24 = 25.75
25.75 x 100 = 2575%
Example