Highlight cell with Fill & Font Colour

Hi,

I am working out on the IF & ELSE project. The codes created below are correct but I am not sure how to adjust the Font.

Basically i need the result of "Insufficient" to be filled with a colour on its Cell.
Fill Colour: Red
Font Colour Yellow & also Bold

Please assist.
Below are the codings:

lastrow = Sheets("PO Summary").Cells(Rows.Count, 2).End(xlUp).Row
    erow = 4
    
For x = 4 To lastrow
  
 Worksheets("PO Summary").Cells(x, 9).FormulaR1C1 = "=(RC6 - RC7)/RC6"
 
     If Worksheets("PO Summary").Cells(x, 7) <= 0 Then
        Worksheets("PO Summary").Cells(x, 8) = "Insufficient"
   
    Else
        Worksheets("PO Summary").Cells(x, 8) = "Sufficient"
 
    End If

erow = erow + 1

Next x

End Sub