I set tables' background to {RGB}{245,246,246} in tabularray package, but the content from @{} in the table below didn't change to that colour, so it is still the original white. So is there a way to make that color change with tabularray package?
\documentclass{article}
\usepackage{tabularray,xcolor}
\UseTblrLibrary{siunitx}
\definecolor{tablebackground}{RGB}{245,246,246}
\SetTblrInner[talltblr]{cells={bg=tablebackground}}
\begin{document}
\begin{table}
\begin{talltblr}{colspec={X[c] X[c,si={table-format=2.2\%}]@{\ $\sim$\ }S[table-format=2.2\%] }}
1&11.11\% &55.56\%\\
2&5.12\% &21.2\%\\
3&6.78\% &2.1\%\\
4&75.5\%&\\
\end{talltblr}
\end{table}
\end{document}



\begin{talltblr}{ X[c] X[c,si={table-format=2.2\%}] @{\llap{\ $\sim$\ }} S[table-format=2.2\%] }to\begin{talltblr}{ X[c] S[table-format=2.2\%] @{\llap{\ $\sim$\ }} S[table-format=2.2\%] }. It is weird. Is there another way to change backgroud color of@{}? – Y. zeng Jun 26 '22 at 02:59\clapin!{\clap{$\sim$}}and why did you add a!here? – Y. zeng Jun 26 '22 at 07:12\llap,\clapand\rlapare three overlap boxes, see https://tex.stackexchange.com/questions/83930 . – L.J.R. Jun 26 '22 at 07:57@and!specifiers in tables, see https://www.learnlatex.org/en/lesson-08 – L.J.R. Jun 26 '22 at 07:59