-1.8% is the change from 667 to 655
Calculation steps:
[( 655 - 667 ) ÷ 667] x 100 = -1.8%
Formula
Percentage change = [(655 - 667) / 667] x 100
Subtract the new number by the original number
655 - 667 = -12
-12 ÷ 667 = -0.017991004497751123
-0.017991004497751123 x 100 = -1.8%