12.19% is the change from 640 to 718
Calculation steps:
[( 718 - 640 ) ÷ 640] x 100 = 12.19%
Formula
Percentage change = [(718 - 640) / 640] x 100
Subtract the new number by the original number
718 - 640 = 78
78 ÷ 640 = 0.121875
0.121875 x 100 = 12.19%