-1.64% is the change from 672 to 661
Calculation steps:
[( 661 - 672 ) ÷ 672] x 100 = -1.64%
Formula
Percentage change = [(661 - 672) / 672] x 100
Subtract the new number by the original number
661 - 672 = -11
-11 ÷ 672 = -0.01636904761904762
-0.01636904761904762 x 100 = -1.64%