20.21% is the change from 673 to 809
Calculation steps:
[( 809 - 673 ) ÷ 673] x 100 = 20.21%
Formula
Percentage change = [(809 - 673) / 673] x 100
Subtract the new number by the original number
809 - 673 = 136
136 ÷ 673 = 0.20208023774145617
0.20208023774145617 x 100 = 20.21%