Adding 80% horizontal goal line to pivot chart

Question

I have a curve pivot chart to which I'd like to add a goal line with a static 80% horizontal line.

I've seen some people suggest that one could merely add a column with 60% to the dataset. My dataset is however too complex for this to work, and I also find that solution a bit messy, so How can I do this the right way?

Answer 1

A quick way to accomplish this is to manually set your Y Axis min and max values based upon your data (assuming 0-100%). Then set your major unit to 0.8 (80%), and your minor unit to 0.1 (10%, or whatever works). Then use the Major Gridline to act as your 80% goal line.

The downside is that you can't label your other minor gridlines (directly as a formating option). However, if your chart's message is about progress in relation to the goal, this should suffice.

EDIT: I'm not sure why the 30% line didn't show up here, it's in the original, but went missing when I created the .png, so it's not an Excel issue and shouldn't be a problem for the solution.