Colour coded card based on the filter clicked

Hi,

My problem here is i want to set the colour to my card based on the sales target of business unit. 

For example:

BU     | Sales Target

A       | 100

B       | 150

My card here shows the Sales number by whole at default. If i clicked the filter BU A, if the Sales number is higher than the target (100), the colour will be green, same as BU B. If lower than the colour is red.

If the filter is "all", the colour should be green if both A AND B passed the target. But the colour should be red if any A OR B below the target.

I have tried a few ways with SELECTEDVALUE and SWITCH functions but this one is out of my reach. Can anyone assist me on this matter?