You would need a third cell for a message
You could colour the target cell using Format | Conditional Formatting
Something like--- Formula Is A10.1*B1
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
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"mrsphyl" wrote in message
...
I would like to display a cell dependent on the value of another cell.

If the value in a cell exceeds 10% of the value in another cell, I would
like to display a warning message in red. I don't want to see the message
at
all if the value in the original cell does not exceed 10%.