12.13% is the change from 643 to 721
Calculation steps:
[( 721 - 643 ) ÷ 643] x 100 = 12.13%
Formula
Percentage change = [(721 - 643) / 643] x 100
Subtract the new number by the original number
721 - 643 = 78
78 ÷ 643 = 0.12130637636080871
0.12130637636080871 x 100 = 12.13%