30.41% is the change from 628 to 819
Calculation steps:
[( 819 - 628 ) ÷ 628] x 100 = 30.41%
Formula
Percentage change = [(819 - 628) / 628] x 100
Subtract the new number by the original number
819 - 628 = 191
191 ÷ 628 = 0.304140127388535
0.304140127388535 x 100 = 30.41%