On the ribbon, click Chart Design and then click Select Data This selects the data range of the chart and displays the Select Data Source dialog box To edit a legend series, in the Legend entries (series) box, click the series you want to change Then, edit the Name and Y values boxes to make any changesDetails In the Edit Series dialog box, clear series name, type the new series name in the same box, and click the OK The name you typed (new name ) appears in the › Verified 1 days ago ChartSeriesNameLevel property (Excel) ;
How To Add Data Labels To Your Excel Chart In Excel 13