Vlookup works when typing in the number, but not when the number is obtained from a formula

So, I'm working on an excel sheet and I encountered an issue.

I have two tables, Q2:T100 which is the lookup array, and F2:I2 where I'm doing the operation.

I want to run F2-G2, obtain the result in H2, and then get the lookup value from Q2:T100 in I2.

If I manually write the result of the difference manuallyin H2, the VLOOKUP function works perfectly. However, if I make H2 return the difference, then VLOOKUP returns #N/A error.

The formula is written like this:

In I2: =VLOOKUP(H2,Q2:T100,2,FALSE)

In H2: =F2-G2

When using the "true" argument, I get the exact match when typing it manually and the result from a row above when introducing it as a formula.

I already tried formating all the cells involved to be numbers and it didn't fix the issue.