27.06% is the change from 643 to 817
Calculation steps:
[( 817 - 643 ) ÷ 643] x 100 = 27.06%
Formula
Percentage change = [(817 - 643) / 643] x 100
Subtract the new number by the original number
817 - 643 = 174
174 ÷ 643 = 0.27060653188180406
0.27060653188180406 x 100 = 27.06%