21.57% is the change from 663 to 806
Calculation steps:
[( 806 - 663 ) ÷ 663] x 100 = 21.57%
Formula
Percentage change = [(806 - 663) / 663] x 100
Subtract the new number by the original number
806 - 663 = 143
143 ÷ 663 = 0.21568627450980393
0.21568627450980393 x 100 = 21.57%