23.21% is the change from 642 to 791
Calculation steps:
[( 791 - 642 ) ÷ 642] x 100 = 23.21%
Formula
Percentage change = [(791 - 642) / 642] x 100
Subtract the new number by the original number
791 - 642 = 149
149 ÷ 642 = 0.23208722741433022
0.23208722741433022 x 100 = 23.21%