-99.58% is the change from 239 to 1
Calculation steps:
[( 1 - 239 ) ÷ 239] x 100 = -99.58%
Formula
Percentage change = [(1 - 239) / 239] x 100
Subtract the new number by the original number
1 - 239 = -238
-238 ÷ 239 = -0.99581589958159
-0.99581589958159 x 100 = -99.58%