This will be a product idea for the igPivotGrid as the API doesn't have a property or method for formatting measures.  Infragistics invites you to submit this as a new product idea.To suggest a new product idea you can do so by navigating to http://ideas.infragistics.com  The steps are easy to do: 

1.       Create a new UserVoice account and log in to the Infragistics Product Ideas site at http://ideas.infragistics.com. 

2.       Navigate to the product / platform channel of your choice (e.g. WPF, Windows Forms, ASP.NET, HTML5 / Ignite UI, iOS / NucliOS, etc.) 

3.       Review the feature suggestions already posted by the community. 

4.       Vote for the features you’d like to see added to the product. 

5.       If the feature you’re looking for has not been posted, you can add your own product idea. Make sure to be specific and provide as much detail as possible. Explain the context in which a feature would be used, why it is needed, why it can’t be accomplished today, and who would benefit from it. You can even add screenshots to build a stronger case. Remember that for your suggestion to be successful, you need other members of the community to vote for it. Be convincing! 

With this system, you are in the driver’s seat by submitting your product ideas. You can even track the progress of your ideas at any time, see how many votes it got, read comments from other developers in the community, and see if someone from the product team has additional questions for you. 

Thank you!

Hi Aliaksei,

This is to let you know that I am looking into your inquiry and will follow-up with you here on the thread once I have some information.

Thanks!