-0.45% is the change from 663 to 660
Calculation steps:
[( 660 - 663 ) ÷ 663] x 100 = -0.45%
Formula
Percentage change = [(660 - 663) / 663] x 100
Subtract the new number by the original number
660 - 663 = -3
-3 ÷ 663 = -0.004524886877828055
-0.004524886877828055 x 100 = -0.45%