To mark up a rate plan by a percent:
From the Applications menu select Product Management > Rates. The Rates window is displayed.
Right-click on an existing entry and select View Rate Details.
Right-click on an existing entry and select Markup. The Markup Rate Details dialog box is displayed.
Enter the percentage amount of the markup. (Use a minus sign (-) for negative amounts.)
Note
The amount you enter will automatically be converted to the correct percentage amount.

Click Adjust. A confirmation box appears.

Click Yes to continue.
Note
When marking up or marking down rates, using percentages, if you mark up and then mark back down using the same percentage, the amount does not return to the same original value.