Calculating various percentages

This recipe and the next two recipes show how to calculate relative percentages, averages, and ranks. We are starting with percentages in this recipe.

Having a ratio of a current member's value over their parent's value is an often-required calculation. It's a form of normalizing the hard-to-grasp values in the table. When the individual amounts become percentages, it immediately becomes clear where the good or bad values are.

There are many kinds of percentages or shares, but we'll take the typical three and present them in this recipe. These are: percentage of the parent's value, percentage of the level's total, and percentage of the hierarchy's total.

This recipe will show how to calculate them using the ragged Sales Territory hierarchy of the Sales Territory dimension. Unlike a balanced (or standard) hierarchy, whose branches all have the same level (or depth) with each member's parent being at the level immediately above the member, a ragged (or unbalanced...