# Adding a pivot table calculation


Use the following procedure to add a table calculation to a pivot table.

**To add a table calculation to a pivot table**

1. Expand the **Field wells** pane by choosing the field wells near the bottom of the visual.

1. Choose the field in the **Values** well that you want to apply a table calculation to, choose **Add table calculation**, and then choose the function to apply.

**Note**  
You can't run Total, Difference, and Percent Difference table calculations when a pivot table is being sorted by a measure. To use these table calculations, remove the sort from the pivot table.