Bar Chart Question

Hi folks,

I'm running into issues displaying a % calculation for categories displayed in a bar chart. I need to figure a way to get a bar chart in POwer BI to show the categories in the y-axis, the x-axis needs to be capped at 100% and then the calculation needs to show the specific % for each category sorted by the highest % (its not cumulative so it doesnt need to be a grand total or a stacked 100% chart). 

As an example, each category could be an exam and the % is the pass rate. How would I achieve that with the standard bar charts in Power BI? In my initial testing, simply putting the category column in the y-axis and the calculation in the x-axis results in each bar showing 100%.

Here's an example of what the calculation looks like in DAX:

Pass Rate = CALCULATE(COUNT('Table'[Student ID], 'Table'[Pass or Failed] = "Pass") / COUNT('Table'[Student ID])

Thank you!