Matrix Table- Single Column Value and Previous Year Measure

I have names in the rows (hidden for privacy purposes), dates in the columns and percentages in the values (a measure). I want to add a single column that states what the target is.

How do I add a column that states the target in each row, 78%, without repeating for each month? I only need it to display in one column rather than repeat for each month column.

I would also like to add a column that summarizes the previous year's YE average %.  To do that, I created a measure similar to the measure used in the table shown above but added the PREVIOUSYEAR function. No data returns. Any suggestions on how to achieve this? Issue Year is in date format. Similar to the target value, I would only want to display the previous year % to as a single column.

This is what I tried:

% Previous YR = CALCULATE(DIVIDE([Count of Ticket], [Row Total]), PREVIOUSYEAR('V02_TICKET'[Issue Year]))

The dashboard has dynamic row level security and the matrix has the ability to drill down based on the org chart, so I need the values to be measures so they can calculate for each level.