This rule type decreases charges by a percentage, dollar amount, or calculation.
Click the radio button next to the option you want to use:
Specific Amount : Type in the dollar amount by which to decrease charges. >> Next
Percentage : Type in a percentage by which to decrease charges. >> Next
Calculated Amount : Add a calculation that will define the amount of decrease. Select an existing calculation or create a new one by selecting New Calculation from the drop-down list.
The button allows you to edit or add a calculation. The expanded calculation is displayed below the calculation field. >> Next
See also : Calculations, Set decrease boundaries or Choose level of rule application