If this is all that is going on here, you should be able to select "Appearance" at the bottom of the table dropdown menu, then change the font to Ariel, or some other font with normal characters.
codepage of the document? It looks like the language/internationalization settings on your machine differ from those used to create the table. I would check it through qgis since arc* isn't going to be able to fix that
Looks like one of the "wingdings" font...characters represented by symbols? For e.g. the symbol in column1 Row 1, is a folder-symbol, which is 0. The symbol in Column1 Row 11, is a open folder with a close folder, which is 10.
If this is all that is going on here, you should be able to select "Appearance" at the bottom of the table dropdown menu, then change the font to Ariel, or some other font with normal characters.