Remember, you need to have the bargraph font installed first.
I quickly created a bar graph font using their wonderful editor. Thankfully this is when I noticed Font Struct, an online font creator / editor. My first challenge was that there was no font readily available for bar graphs. What more, these would probably look gorgeous when printed out. An in-cell bar would probably be more useful and cuter than an in-cell pie as it can instantly provide trending details. Ever since writing the create in-cell pie charts in excel, I have been itching to find a simple enough method to do incell bar graphs.