30.18% is the change from 623 to 811
Calculation steps:
[( 811 - 623 ) ÷ 623] x 100 = 30.18%
Formula
Percentage change = [(811 - 623) / 623] x 100
Subtract the new number by the original number
811 - 623 = 188
188 ÷ 623 = 0.3017656500802568
0.3017656500802568 x 100 = 30.18%