Help, how d I get % change?

Hi bv27718n,

Looking at your file, you do not need the relationship between the Elite 20 and 21 tables.

Below is a formula that will create a new column in your table with the other tables value

PF Life 2020 col = 
VAR _state = 'Elite 5.21'[State]
return 
CALCULATE(MAX('Elite 5.20'[PF life]), FILTER('Elite 5.20', 'Elite 5.20'[State] = _state))

you can then create the following measures to get the sums and variance

PF Life 2020 = SUM('Elite 5.21'[PF Life 2020 col])

pf life 2020 var = sum('Elite 5.21'[PF Life]) - sum('Elite 5.21'[PF Life 2020 col])

Result would look like this

I have attached your file with my mods

To slice by Region, you will need to create a region table that contains each state and region then relate the table to the fact tables on the state. You will then use the the region to filter and slice your data.

Please review the following Microsoft docs for best practices for data modelling

https://docs.microsoft.com/en-us/power-bi/guidance/star-schema 

I would also suggest that you store your facts in a single fact table with a period column to define the period that the fact belongs to rather than creating tables for each year, it is not a manageble or extensible solution.

Thanks,