Performance Indicator - Quality Scoring

Hello, could you please assist with my formula.

I am trying to indicate peoples performance based on their quality %

E.g: If someone was working at 20% quality or less, they would get a performance indicator of 5. If they were working at 100% or above they would get a 1.

I am trying to work this out in a formula using IF >= <= but its giving the wrong numbers.

I have attached an example workbook. Can anyone help figure out the formula as my mind is numb! Thanks