Adding units to pgfplots nodes in column chart

By default nodes near coords prints \pgfmathprintnumber{\pgfplotspointmeta}. You can add a percent sign by saying

nodes near coords=\pgfmathprintnumber{\pgfplotspointmeta}\%

\documentclass{article}

\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
    symbolic x coords={A,B,C},
    nodes near coords=\pgfmathprintnumber{\pgfplotspointmeta}\%,
    xtick=data
    ]
    \addplot[ybar,fill=blue] coordinates {
        (A,34)
        (B,22)
        (C,13)
    };
\end{axis}
\end{tikzpicture}

\end{document}

• Based on Text nodes for nodes near coords I added a custom/explicit point meta.
• Of course, Torbjørn T. answer is better since you don't have to repeat the values.

---

\documentclass{article}

\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
% https://tex.stackexchange.com/questions/350129
\begin{axis}[
    symbolic x coords={A,B,C},
    nodes near coords,
    point meta=explicit symbolic,
    xtick=data,
    ]
    \addplot[ybar,fill=blue] coordinates {
        (A,34) [34 \%]
        (B,22) [22 \%]
        (C,13) [13 \%]
    };
\end{axis}
\end{tikzpicture}

\end{document}

---