-0.3% is the change from 662 to 660
Calculation steps:
[( 660 - 662 ) ÷ 662] x 100 = -0.3%
Formula
Percentage change = [(660 - 662) / 662] x 100
Subtract the new number by the original number
660 - 662 = -2
-2 ÷ 662 = -0.0030211480362537764
-0.0030211480362537764 x 100 = -0.3%