21.55% is the change from 673 to 818
Calculation steps:
[( 818 - 673 ) ÷ 673] x 100 = 21.55%
Formula
Percentage change = [(818 - 673) / 673] x 100
Subtract the new number by the original number
818 - 673 = 145
145 ÷ 673 = 0.21545319465081725
0.21545319465081725 x 100 = 21.55%