-90.18% is the change from 672 to 66
Calculation steps:
[( 66 - 672 ) ÷ 672] x 100 = -90.18%
Formula
Percentage change = [(66 - 672) / 672] x 100
Subtract the new number by the original number
66 - 672 = -606
-606 ÷ 672 = -0.9017857142857143
-0.9017857142857143 x 100 = -90.18%