-1.93% is the change from 673 to 660
Calculation steps:
[( 660 - 673 ) ÷ 673] x 100 = -1.93%
Formula
Percentage change = [(660 - 673) / 673] x 100
Subtract the new number by the original number
660 - 673 = -13
-13 ÷ 673 = -0.019316493313521546
-0.019316493313521546 x 100 = -1.93%