-93.75% is the change from 672 to 42
Calculation steps:
[( 42 - 672 ) ÷ 672] x 100 = -93.75%
Formula
Percentage change = [(42 - 672) / 672] x 100
Subtract the new number by the original number
42 - 672 = -630
-630 ÷ 672 = -0.9375
-0.9375 x 100 = -93.75%