34.68% is the change from 643 to 866
Calculation steps:
[( 866 - 643 ) ÷ 643] x 100 = 34.68%
Formula
Percentage change = [(866 - 643) / 643] x 100
Subtract the new number by the original number
866 - 643 = 223
223 ÷ 643 = 0.3468118195956454
0.3468118195956454 x 100 = 34.68%