I am trying to get some data that we currently store in Excel into JMP. In Excel, we use a VLOOKUP function (the 'HIV alert limits' column correlated to the 'semester donations estimate' column) and then calculate the '% of standard' column (HIV total/HIV alert limits) to get a percent.

In JMP, I have made the 'HIV alert limits' column with an IF formula. This formula works on a range and based on the 'semester donations estimate' column, we get the 'HIV alert limits' (so within each range gives us an allowed count). When I do this formula, it outputs it as a Character-Nominal value. Which would be fine if that was all I needed. But then I need to take that and get my '% of standard' column (HIV total column/HIV alert limits column). JMP does not like this and keeps giving me errors because of the Character-Nominal value.
How can I fix this so that I can do both the 'HIV alert limits' and '% of HIV std' columns?
I am attaching a demo version with fake numbers, but all the formulas in it are correct. There is not formula currently in the '% of HIV std' column because of this error.