\input{./vars}

\begin{document}
\begin{tabular}{lrr}
\toprule
\textbf{Ingredient}    & \multicolumn{1}{l}{\textbf{Percent}} & \multicolumn{1}{l}{\textbf{Calculation}}  \\ \midrule
1000g flour            & 100\%                                & 1000g of 1000g = 100\%                    \\ \midrule
600g water             & 60\%                                 & 600g of 1000g = 60\%                      \\ \midrule
100g sourdough starter & 10\%                                 & 100g of 1000g = 10\%                      \\ \midrule
20g salt               & 2\%                                  & 20g of 1000g = 2\%                        \\ \bottomrule
\end{tabular}
\end{document}