Wing dings font with the character Z has a left pointing arrow
But you may just want to use a background image of fixed (small size) to show the arrow and type text in the text box placed to the right to have it all together.
wing dings arrow
in Text box enter
Chr(90) then go to Font tab and select Wingdings 3. Click OK. This should give you left arrow.
You can take it further if you want, simple add IF function to check your KPI then display any arrow of your choice.
Chr(124) left arrow,
Chr(125) right arrow,
Chr(126) up arrow,