I have, the problem with it is the nested curly braces "}". Orion doesn't like them very much and I get a:
MACRO SQL ERROR - Incorrect syntax near '26.6993'.
Note, the drive is 26.6993% full so the result I am looking for should be 73.3007
100 - Volumes.VolumePercentUsed = 100 - 26.6993 = 73.3007
I have tried different ways of getting the result I am looking for but have been thus far un-successful.