24.14% is the change from 642 to 797
Calculation steps:
[( 797 - 642 ) ÷ 642] x 100 = 24.14%
Formula
Percentage change = [(797 - 642) / 642] x 100
Subtract the new number by the original number
797 - 642 = 155
155 ÷ 642 = 0.24143302180685358
0.24143302180685358 x 100 = 24.14%