No Data in Cell, don't want to display label or chart?

Hello!

This might be a dumb question as I am still very new with Excel. Let's say I have data in cell A2 and data in cell A3 (both are percentages). The data for these two cells is being pulled from a different cell (in a pivot table). I am then using A2 and A3 to make a pie chart. Sometimes A2 and/or A3 may be empty given it is empty in the pivot. When the cell is empty how can I NOT DISPLAY the pie chart, or atleast not display the label (category name and number). I've looked up how to not display the label and I keep coming across the custom label "0;;;", but this just messing up the value when A2 is an actual value. Any advice? Anything helps!