The certificate discount percentage can be displayed or hidden from the certificate list. To configure what is displayed navigate to Settings -> User Settings and scroll down to the 'Certificate List' section.
The options for 'Percent(s) Displayed' are as follows:
User: Only the user percentage is displayed.
Organization: Only the organization percentage is displayed.
Both: Both the user and organization percentages are displayed in seperate columns.
Combined: The user and organization percentages are combined and displayed as one value.
None: No percentages are displayed.