24.3% is the change from 642 to 798
Calculation steps:
[( 798 - 642 ) ÷ 642] x 100 = 24.3%
Formula
Percentage change = [(798 - 642) / 642] x 100
Subtract the new number by the original number
798 - 642 = 156
156 ÷ 642 = 0.24299065420560748
0.24299065420560748 x 100 = 24.3%