One of the many features of Excel is being nosy. That's right, you can quickly calculate a persons age as long as you have their birth date.

Learn how to calculate moving averages in Excel using dynamic arrays. Simplify rolling totals with custom functions for efficient analysis.

Percentage Formula: Know How to Calculate Percentage in Excel along with Solved questions and examples and Download formula PDF list.

How to Calculate Percentage Change Calculating percentage change is one of the most frequently used tasks in Excel. The basic formula is: (New Value / Old Value) – 1.