\documentclass{standalone}

\usepackage{tikz}
\usetikzlibrary{shapes, arrows}
\usetikzlibrary{arrows,calc,decorations.markings,math,arrows.meta}
\usetikzlibrary{positioning}
\usepackage{graphicx}



\begin{document}
\begin{tikzpicture}
	\definecolor{back}{rgb}{0.95,0.95,0.95}
	\node [fill=back](table) {\tikz{
	\fill [gray,scale=.35] (-2,1.5) rectangle (3,2);
	\begin{scope}[scale=0.35]
	  \draw[xstep=1,ystep=0.5] (-2,-2) grid (3,2);
	\end{scope}
	}};
	
	\draw[-{Latex[scale=1]},line width=0.7mm] (-2,0) -- (table.west) {};

\end{tikzpicture}
\end{document}
