On a list page, fields can display summary information at the top of the column.
In the example below, a Link field on a Versions page is displaying a Version Count. There are 237 Versions listed.
In the example below, a Name field on a People page is displaying a Person Count, while the Status field is displaying the Percentage of Active users.
To see a field's summary, in List View, right-click on a column's header. Select Summary and choose the type of summary to display.
Using field summaries is an easy way to display summary information to provide users with big picture of information.
