1.8% is the change from 668 to 680
Calculation steps:
[( 680 - 668 ) ÷ 668] x 100 = 1.8%
Formula
Percentage change = [(680 - 668) / 668] x 100
Subtract the new number by the original number
680 - 668 = 12
12 ÷ 668 = 0.017964071856287425
0.017964071856287425 x 100 = 1.8%