If a form contains numerical fields like "Number/Percentage/Decimal/Currency" you can display the sum of the all the values entered for this field in the view. To display the sum:

• Click on "Edit this application" and navigate to the appropriate view.
• From the left pane, from under "Display" click on "Column Properties".
• In the right pane, all the fields present in the form will be displayed.
• Next to Numerical fields, a small icon "Sum Disabled" will be displayed.
• Click on the icon to enable the Sum to be displayed in the view.
• Click "Done" to save.

Click on "Access this Application" to view the View. You can see after the last row of records, in an extra row, the sum of the particular field is displayed