-81.97% is the change from 233 to 42
Calculation steps:
[( 42 - 233 ) ÷ 233] x 100 = -81.97%
Formula
Percentage change = [(42 - 233) / 233] x 100
Subtract the new number by the original number
42 - 233 = -191
-191 ÷ 233 = -0.8197424892703863
-0.8197424892703863 x 100 = -81.97%