Conditional formatting of Measure in a Table

Hello - the formatting link above seems outdated - I don't see the ability in rules to specify if its a number, %, etc.  

As per a screenshot - here is the filter i'm trying to apply:

My field in the table i'm trying to change is Net Revenue.  It is a percentage - currently the field shows 156%.  So i'm trying to simply say if the % is greater than or = to 0 - make the background, or even font color I don't care, set to Green and if below zero - as my other column i'd like to use the same formatting on is -56% - set it to Red.  So a really simple condition that says if is zero % or above Green, negative then Red.  

When I click OK it goes back to the table and nothing happens.  Any thoughts?