The year-over-year plot compares monthly values of Actual and Plan (or of actual and previous year) showing the differences with red and green areas for all the months in the dataset.
The plot will show the monthly difference between Actual and Plan or Actual vs Previous Year with a "red equals bad" and "green equals good" color scheme both at the total level and for each dimension
If the date of most recent information is not equal to December, the chart will plot the months reordered showing the most recent 12 months.
You can set the plot to only show the difference of the actual data versus the other period/scenario or to show the difference between actual data and actual year average.
Also as small multiples.