... Calculations in a Pivot Table I n a pivot table, you can use functions like Sum, Count, or Average to summarize the fields you place in the Values area. You can also use custom calculations, ... 2008 to March 2009, and they are grouped by year and month in the pivot table. Product is in the Column Labels area, Years and Date are in the Row Labels area, and Units is in the Values area. If ... of 2008, and begins again in January 2009. CHAPTER 3 ■ CALCULATIONS IN A PIVOT TABLE 51 If you calculate a running total with Years as the base field: • The subtotals for Years display the running...