22.9% is the change from 642 to 789
Calculation steps:
[( 789 - 642 ) ÷ 642] x 100 = 22.9%
Formula
Percentage change = [(789 - 642) / 642] x 100
Subtract the new number by the original number
789 - 642 = 147
147 ÷ 642 = 0.22897196261682243
0.22897196261682243 x 100 = 22.9%