-95.54% is the change from 672 to 30
Calculation steps:
[( 30 - 672 ) ÷ 672] x 100 = -95.54%
Formula
Percentage change = [(30 - 672) / 672] x 100
Subtract the new number by the original number
30 - 672 = -642
-642 ÷ 672 = -0.9553571428571429
-0.9553571428571429 x 100 = -95.54%