For example 2.41 becomes 41.2
\documentclass{book}
\usepackage[format=hang, labelfont=bf]{caption}
\usepackage{xepersian}
\settextfont[Scale=2]{Times New Roman}
\setlatintextfont[Scale=2]{Times New Roman}
\defpersianfont\Sayeh[Scale=1.5]{Times New Roman}
\usepackage{booktabs}
\begin{document}
\begin{table}[htbp]
\centering
\caption{Add caption}
\begin{tabular}{rrl}
\toprule
\multicolumn{1}{l}{\textbf{النسبة (\%)}} & \multicolumn{1}{l}{\textbf{المساحة (كام²)}} & \textbf{الجماعة} \\
\midrule
2.41 & 4.22 & زريزر \\
3.79 & 6.66 & خلالفة \\
26.51 & 46.56 & مزراوة \\
\midrule
\textbf{100.00} & \textbf{175.65} & \textbf{المجموع} \\
\bottomrule
\end{tabular}%
\label{tab:addlabel}%
\end{table}%
\end{document}