I'm able to draw pie chart using tex code mentioned below:
\begin{center}
\begin{pspicture}(-7,-4)(7,4)
\psset{unit=1.2}
\psChart[userColor={black!10,black!40,black!70},shadow,shadowsize=3pt, chartNodeO=1.15]{98,1,1}{}{3}
\bfseries%
\ncline[arrows=<-, arrowscale=1.5, nodesepB=2pt]{psChartI1}{psChartO1}
\ncline[arrows=<-, arrowscale=1.5, nodesepB=2pt]{psChartI2}{psChartO2}
\ncline[arrows=<-, arrowscale=1.5, nodesepB=2pt]{psChartI3}{psChartO3}
\rput[c](psChartO1){98 \% scored more than you.}
\rput[c](psChartO2){1 \% scored less than you.}
\rput[c](psChartO3){1 \% scored equal to you.}
\end{pspicture}
\end{center}
MWE code is mentioned here
Issue is when two consecutive pie next to each other are very small (also sometimes text and arrow gets overlapped), text get's overlapped, sample image is mentioned below:
Can you please suggest, how to correct this?