Chart Display Units

Not sure on your exact data layout but could potentially look into dynamic string formats? 

https://learn.microsoft.com/en-us/power-bi/create-reports/desktop-dynamic-format-strings

Hey KeithNeedsHelp 
Yes it is possible with the new Dynamic string format
I recreated your scenario please follow below step to achieve your requiremnet

Input Data

Step 1: Create a simple measure 

Step 2: Go to Dynamic format

Step 3: Now type the condition in the format you want the end output

Now you will get your expected output as below

If this helps ypu then please kudo this post and mark it as a solution so that others can find it quickly while facing the similar issue. Thank You!