I have a table that shows the number of elements added, deleted, and changed in a graph. I'm calling the sum of additions + deletions + changes the "differences." I also want to include a column that shows the "percentage of elements that are different"--for simplicity, let's say this percentage is the number of differences divided by the total number of elements.
My first thought is to call this percent different or difference percentage or modification factor but it seems like there should be a more commonly-used term for this. I also considered percent changed but since "change" has a specific technical meaning in this table I can't use that. Any suggestions?