Simple sort allows you to sort results and labels creating a single level sort.
To execute a simple sort, highlight one of the cells with calculations that you want to sort and click on the Sort button (2).
If simple sort is available for these values, the context menu will appear. You can choose whether you want the sort to be ascending or descending. This menu also allows you to go to Custom sort.
If simple sort is already applied for the selected variable, an Edit window will open (read more in Custom sort).
Highlight one of the cells with results
Choosing a cell containing calculation "% of column, sample base" will result in a sort by "% of column, sample base". The same applies to all statistics.