To convert percent to a number divide it by 100
Then to convert 838% to a number divide it by 100
[tex]838\text{ \%=}\frac{838}{100}[/tex]To simplify divide up and down by 2
[tex]\begin{gathered} \frac{838}{100}=\frac{\frac{838}{2}}{\frac{100}{2}} \\ \frac{838}{100}=\frac{419}{50} \end{gathered}[/tex]The improper fraction is 419/50 in the simplest form