Learn how to calculate Weighted Average in Excel with percentages using the SUM function and the SUMPRODUCT function.

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.

Learn to calculate Consumer Price Index (CPI) using Excel and create its graph, please read through this article. We have discussed the prcedure extensively.

Warnings If you are not careful in collecting and analyzing the numbers you use to calculate ROI, the percentage Excel calculates will provide a false picture of you business's health.