Conditional Formatting Table view

Hello,

I have three measures in table view.

1st is the Amount, 2nd Amount MTD and 3rd is the % of Goals which is (Amount/Amount MTD)*100.

I want to set conditional format on % of Goals.... If it is less than 99% then color as red if it is 100 then black.

I don't know how to set color red if the value is less than 100%.

Thanks.