Is it more useful to compare YTD values or monthly values?
This function can be toggled on and off at the top of the page by toggling the check boxes. Both are very useful but it's important to realize where. Usually comparing YTD values is going to give you a better comparison as anomalous or zero readings get diluted with good values. Using Monthly values may be more relevant when using a group that is made up of a large number of stores. This allows you to track changes on a month by month basis.