23.38% is the change from 663 to 818
Calculation steps:
[( 818 - 663 ) ÷ 663] x 100 = 23.38%
Formula
Percentage change = [(818 - 663) / 663] x 100
Subtract the new number by the original number
818 - 663 = 155
155 ÷ 663 = 0.23378582202111614
0.23378582202111614 x 100 = 23.38%