-0.3% is the change from 669 to 667
Calculation steps:
[( 667 - 669 ) ÷ 669] x 100 = -0.3%
Formula
Percentage change = [(667 - 669) / 669] x 100
Subtract the new number by the original number
667 - 669 = -2
-2 ÷ 669 = -0.0029895366218236174
-0.0029895366218236174 x 100 = -0.3%