What is the correlation between UPB and total change reveune?

What is the correlation between UPB and total change reveune?

For the attached PP and assumptions, that were provided to me, I need a word doc, doesn’t have to be a full page (please write in layman’s terms as I’m not very data/technical/business savvy) explaining the relationship between total change revenue and UPB. Appears the UPB has a direct impact on change revenue meaning the higher the UPB the higher the change revenue and the correlation is positive. Is that a good or bad thing. Just a need a summary so I can speak about this intelligently and state whether the is a good or bad for a business UPB and total change revenue correlation.