-85.12% is the change from 672 to 100
Calculation steps:
[( 100 - 672 ) ÷ 672] x 100 = -85.12%
Formula
Percentage change = [(100 - 672) / 672] x 100
Subtract the new number by the original number
100 - 672 = -572
-572 ÷ 672 = -0.8511904761904762
-0.8511904761904762 x 100 = -85.12%