To calculate the Consumer Price Index between two years in Excel, take a sum of all the amounts spent on the basket of products over those two years. Then use the following formula to find the CPI ...

David Lavie is a writer and editor with two decades' experience in marketing communications, equity research and publishing. He is a founding partner in Quartet Communications, where, as Head of ...

The current formula for Social Security's cost-of-living adjustments (COLA) is under scrutiny for failing to keep pace with ...