Karen,
I have attached a reference doc from a Tuesday Tip session from 2012 that you can use to check EV Calculations.
Please note that if your Rate Matrix was not set up prior to posting actuals to any of the projects you wish to calc EV on going forward, your numbers will be off. Actual Cost is taken at a specific point in time and cannot be updated retroactively through the application, i.e. changing rates, adding a rate, will not change historical data.
Also, I believe that the EV History portlet you are referencing was deprecated in version 13.0/PMO 3.0 of the application, but CA Support should be able to confirm that for you. If that is the case, you may continue to use the existing portlet, but it would not be part of the supported package.
Regards,
Jenn
JENN RINELLA
Technology Architect III
RNAM OP PST&M BUS TRANSFORMATION TOOLS
Ericsson | jenn.rinella@ericsson.com | www.ericsson.com