30.39% is the change from 622 to 811
Calculation steps:
[( 811 - 622 ) ÷ 622] x 100 = 30.39%
Formula
Percentage change = [(811 - 622) / 622] x 100
Subtract the new number by the original number
811 - 622 = 189
189 ÷ 622 = 0.30385852090032156
0.30385852090032156 x 100 = 30.39%