Percentage Vlookup Returning Error / Incorrect Values

Hey everyone - been trying to work through this issue and has been driving me crazy!

In the attached excel, I'm trying to Vlookup a percentage value against a table, where using approximate range lookup returns an incorrect value and exact range lookup returns error.

The issue is all these percentages are round numbers and the lookup works for a select few values (e.g., 8% works, but not 6%). However, if I go to B10 or I10 and manually enter "6%" it works -- it's extremely strange.

Let me know what's going on here! Been at it all night and it's driving me insane.

Thanks!