26.32% is the change from 642 to 811
Calculation steps:
[( 811 - 642 ) ÷ 642] x 100 = 26.32%
Formula
Percentage change = [(811 - 642) / 642] x 100
Subtract the new number by the original number
811 - 642 = 169
169 ÷ 642 = 0.2632398753894081
0.2632398753894081 x 100 = 26.32%