\begin{table}
    \begin{tabularx}{\textwidth}{|*{2}{X|}l|*{2}{X|}}
        \hline
        First entry & 2nd    & 3rd little longer & Forth & Fifth\\ \hline\hline
            4.7\%  & 11.7\% & 2.5\%         & 80.5\%         & 0.7\%  \\ \hline
    \end{tabularx}
    \caption{tabularx}
    \noindent X\hrulefill X % just for showing text width
\end{table}