In order to place the numbers in descending order, i.e greatest to least, we would have to simplify or at least approximate some numbers.
[tex]\begin{gathered} \pi\approx3.142 \\ 31\text{\%}=0.31 \\ \frac{1}{3}\approx0.333 \end{gathered}[/tex]Therefore, placing the numbers in ascending order would result in;
[tex]-0.32,31\text{\% ,}\frac{1}{3},3.1\text{ , }\pi[/tex]This is therefore the correct order.