23.53% is the change from 663 to 819
Calculation steps:
[( 819 - 663 ) ÷ 663] x 100 = 23.53%
Formula
Percentage change = [(819 - 663) / 663] x 100
Subtract the new number by the original number
819 - 663 = 156
156 ÷ 663 = 0.23529411764705882
0.23529411764705882 x 100 = 23.53%