Putting a title on a pie chart

Question

How do I put a title on the following pie chart? I tried using \stackon.

\documentclass[10pt]{amsart}
\usepackage{mathtools,systeme,array}

\usepackage{tikz}

\usepackage{adjustbox}
\usepackage{mathtools}

\usepackage{array}
\usepackage{makecell}
\usepackage{stackengine}\setstackEOL{\cr} %EOL is abbreviation for "end of line."


\begin{document}


%\setlength\extrarowheight{2pt}
%\stackon{%


\begin{tikzpicture}[every node/.style={align=center}, pin distance=5mm]

\coordinate (O) at (0,0);
\draw (O) circle (3);
\draw (O) -- (0:3);
\draw (O) -- (90:3);
\draw (O) -- (216:3);
\draw (O) -- (234:3);
\draw (O) -- (288:3);

\path (O) -- node{Food \\ 25\%} (45:3);
\path (O) -- node{Rent and \\ Utilities \\ 35\%} (153:3);
\path (O) -- node[pin=225:Clothing \\ 5\%] {} (225:5);
\path (O) -- node{Other \\ 5\%} (261:3);
\path (O) -- node{Car \\ 20\%} (324:3);
\end{tikzpicture}

%}{\bfseries\Longstack{David's Monthly Expenses}}


\end{document}

Answer 1

Normally pictures doesn't contain titles, this is task of figure captions, something like this:

text text text
    \begin{figure}
... picture ...
    \caption{David's Monthly Expenses}
    \label{fig:david-expences}
    \end{figure}
text text text

To add picture name on picture -- as I said in my comment, you need add a node with picture title:

\documentclass[tikz,border=2mm]{standalone}
\usetikzlibrary{angles,calc,positioning}

\begin{document}
    \begin{tikzpicture}[
every node/.style={align=center},
     pin distance=9mm
                    ]
    \coordinate (O) at (0,0);
\draw (O) circle (3);
\draw (O) -- (0:3);
\draw (O) -- (90:3);
\draw (O) -- (216:3);
\draw (O) -- (234:3);
\draw (O) -- (288:3);

\path (O) -- node{Food\\ 25\%} (45:3);
\path (O) -- node{Rent and\\ Utilities\\ 35\%} (153:3);
\path (O) -- node[pos=0.75,pin=225:Clothing\\ 5\%] {} (225:3);
\path (O) -- node{Other\\ 5\%} (261:3);
\path (O) -- node{Car\\ 20\%} (324:3);

\node[below=33mm of O] {\textbf{Title of picture}};%select one, which you more like
\node[right=33mm of O] {\textbf{Title of picture}};
    \end{tikzpicture}
\end{document}

Of course, bots solution has nothing with tables, except if you like to put picture in table (what wasn't state in question). For your pie chart I use my answer on one of your previous question.