I have plotted 2 data sets in graph builder that looks like this:

The USL and LSL were automatically placed via the spec limits I set in the column properties and adding refrences lines to graph. I then additionally added a Marginal USL (MUSL) manually in graph builder.
To this graph, I would like to add a label or note with the count/sample size for each data set as well as the % of points above USL, above MUSL and below LSL. I would like this "label" to be automatically updated everytime i change the data. How can I do this?