Use the Edit Summary dialog box to set or change the summary operation for the selected field.
This dialog box appears when you select a summary field on a report, right-click it, and select the Change Summary Operation command from the shortcut menu. The command is also available when you:
The Set Summary Operation button is available for charts and maps with an Advanced layout type. You must move a field to the "values" list and select it in order to activate the button.
Note Map objects are not supported in this version of Crystal Reports.
Note Not all the summary types available apply to all fields. For example, you cannot sum or average a text, Boolean, date/time, time, or date field.
After you select the check box, you can choose the total or group you want the comparison to be based on.
Note The percentage option is available only when the result of a summary operation is numeric.