Disaggregating Reports

Matt Allington takes a pivot table and digs into components to help determine underlying drivers of change:

As you can see below, TV and Video total sales were up $178m vs prior year, yet there was also a decline in sales of $79m caused by lower sell prices.  And Cameras and camcorders actually had an increase in sales due to sell price, and that drove the total result higher than it otherwise would have been.  Of course there is normally an inverse relationship between price and volume (the lower the price, the more you sell).  The trick is to maximise sales (or more correctly margin $).

There are a lot of comments worth reading as well.

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