Would you be able to attach a sample workbook? That will help us to help you quicker
Please find attached above a sample file - obviously all randomised dummy data.
If you look at the main chart - What I need is the X-axis values for the 50%/80%/90% Y-axis values (X only has integers, so rounding down to the closest).
As you can tell from my improvised "bar charts" and my calculated fields on the dashboard, I got close - I just need the counts of the blocks rather than these charts now.