Use the Rename Data Graphic dialog box to change the name of a data graphic. The name appears when you pause your pointer on a data graphic in the Data Graphics task pane.
On the Data menu, click Display Data on Shapes.
In the Data Graphics task pane, right-click the data graphic that you want to rename, and then click Rename.
Note: The Rename command is unavailable (appears dimmed) if you right-click the data graphic named None.
In the Rename Data Graphic dialog box, type a new name in the Name box.