Within the measure's Hierarchy Editor, to perform a calculation on a measure, right-click and select Calculated value.

Within the measure's Hierarchy Editor, to perform a calculation on a measure, right-click and select Calculated value. This opens the MDX formula wizard from which you can create various calculations. For example, a calculation which shows percentage contribution to specific levels in a chosen hierarchy (measure to base).

This wizard also includes common time calculations such as Year to Date (YTD), Month to Date (MTD), Rolling Total, and Previous Period.