Rank Change (OLAP) 
Purpose
The Rank Change template is an OLAP ranking template with which you can build queries that, based on a specific measure, calculate the change in rank of members of a particular level compared with their rank from a previous period.
This template borrows from the functionality of the Top N template in order to select the members of the base period.
You should use this template if you would like to address business questions such as the following:
What is the change in rank for my top ten customers between last year and this year?
Prerequisites
You have an OLAP data service configured as a BI system.
Process Flow
After using the BI Query Wizard to select an OLAP data service and the Rank Change template, the wizard steps you through the following process flow:
...
2. Configure Rank Change parameters
Result
After you have completed the wizard screens according to the process above and clicked Finish, you return to the Visual Composer workspace, where a new data service has been created with the query you have configured.
A data service created with the BI Query Wizard is configured automatically with a start input and a table view as output. These three elements together constitute a complete iView, ready for preview and deployment to your portal.
To continue working with your data service and query, see:
Example
For an example of working with the Rank Change template, see Configuring Rank Change Parameters.