Not sure what you are looking for. The formula is easy, arre you looking for
recommmendattions on how to setup the spreadsheet? Is the problem the "Range
of Products"?

Error = (Actual - Forecast)/Actual

Accuracy = 1 - Error.

"John Moore" wrote:

Hi guys, I'm looking for a good way to meaure demand accuracy across a range
of products each month. Does anyone know of a good way to do this ?