50.78% is the change from 642 to 968
Calculation steps:
[( 968 - 642 ) ÷ 642] x 100 = 50.78%
Formula
Percentage change = [(968 - 642) / 642] x 100
Subtract the new number by the original number
968 - 642 = 326
326 ÷ 642 = 0.5077881619937694
0.5077881619937694 x 100 = 50.78%