To calculate the average percentage difference over time, you'll need to build a time series of data. The starting point is the price information for each date on which you're producing an average.

Calculating the average percentage difference To come up with the average percentage difference over time, you'll need to build a time series of data.

First, calculate the difference between the two prices for each date. You'll need to pick one set of numbers to be the starting point on which the percentage difference will be calculated, and ...

Easy way to calculate time difference in Excel using simple logic. A simple formula to calculate difference between two dates & times in Excel.

This post will show you how to calculate the percentage difference between two numbers in Excel. using this formula you can find percentage difference easily.