Leancrew example of siunitx tables

leancrew-table.tex

\documentclass[a4paper]{article}
\usepackage{booktabs,siunitx}
\begin{document}

\newcommand\minibox[1]{%
  \makebox[0pt][c]{\begin{tabular}[b]{c}#1\end{tabular}}%
}

\begin{tabular}{
   l
   S[ table-column-width = 1.5cm, table-format = 3.0 ]
   S[ table-column-width = 1.3cm, table-format = 2.0 ]
   S[ table-column-width = 1.3cm, table-format = 2.0 ]
   S[ table-column-width = 1.3cm, table-format = 2.0 ]
  }
  \toprule
  && \multicolumn{3}{c}{Defect Percentages} \\
  \cmidrule{3-5}
  {Defect} & {Count} &
      {\minibox{Point\\Estimate}} & 
      {\minibox{Lower\\bound}}    & 
      {\minibox{Upper\\bound}}    \\
  \midrule
  Criterion 1   & 127 & 25 & 22 & 29 \\
  Criterion 2   &  38 &  8 &  5 & 10 \\
  Criterion 3   & 394 & 79 & 75 & 82 \\
  Criterion 4   & 212 & 42 & 38 & 47 \\
  Criterion 5   & 108 & 22 & 18 & 25 \\
  \midrule[0pt]
  Any criterion & 433 & 87 & 83 & 89 \\
  \bottomrule
\end{tabular}

\end{document}

But getting the percent signs in there is going to be the kicker, I think.