-0.89% is the change from 672 to 666
Calculation steps:
[( 666 - 672 ) ÷ 672] x 100 = -0.89%
Formula
Percentage change = [(666 - 672) / 672] x 100
Subtract the new number by the original number
666 - 672 = -6
-6 ÷ 672 = -0.008928571428571428
-0.008928571428571428 x 100 = -0.89%