-97.32% is the change from 672 to 18
Calculation steps:
[( 18 - 672 ) ÷ 672] x 100 = -97.32%
Formula
Percentage change = [(18 - 672) / 672] x 100
Subtract the new number by the original number
18 - 672 = -654
-654 ÷ 672 = -0.9732142857142857
-0.9732142857142857 x 100 = -97.32%