-1.91% is the change from 680 to 667
Calculation steps:
[( 667 - 680 ) ÷ 680] x 100 = -1.91%
Formula
Percentage change = [(667 - 680) / 680] x 100
Subtract the new number by the original number
667 - 680 = -13
-13 ÷ 680 = -0.01911764705882353
-0.01911764705882353 x 100 = -1.91%