Maybe something like this ...
Option Explicit Sub CheckItemNumbersForJack() Dim cel As Range, rng As Range, tmp Set rng = Sheets("Compare").Range("E12", Sheets("Compare").Range("E65536").End(xlUp)) With Sheets("Numbers increased by Star") For Each cel In rng Set tmp = .Range("A:A").Find(cel.Value, _ lookat:=xlWhole, MatchCase:=True) If Not tmp Is Nothing Then cel.Interior.ColorIndex = 4 tmp.Interior.ColorIndex = 4 End If Next cel End With End Sub