› how-to-add-totals-toHow to Add Totals to Stacked Charts for Readability - Excel ... Click on the graph 2. Go to the Chart Tools/Layout tab and click on Text Box. 3. Click on the graph where you want the text box to be. 4. Then click in the formula bar and type your cell reference in there. Don’t type it directly in the text box. For your cell reference, you have to include the tab name, even if the cell is on the same tab as ...