-0.3% is the change from 667 to 665
Calculation steps:
[( 665 - 667 ) ÷ 667] x 100 = -0.3%
Formula
Percentage change = [(665 - 667) / 667] x 100
Subtract the new number by the original number
665 - 667 = -2
-2 ÷ 667 = -0.0029985007496251873
-0.0029985007496251873 x 100 = -0.3%