So, select any cell in your formatted Excel table, and in the Insert Tab on the ribbon, click the top half of the split "PivotChart" button.

To activate Power Pivot, go to File > Options, click Add-ins, select COM Add-ins from the dropdown, and check the box for Microsoft Power Pivot for Excel. Once enabled, a new Power Pivot tab appears ...

Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.