Looking at it again, I wonder whether the OP might have intended
=AND(D7/C7-0.1,D7/C7<0)
Was this what you wanted?

As an alternative, you could presumably have had Cell Value Is/
Between/ -0.1*C7 / and/ 0
but that wouldn't be quite the same as I think Excel treats "between" ion
this context as being inclusive of the limit values.
--
David Biddulph

"David Biddulph" <groups [at] biddulph.org.uk wrote in message
...
I don't know what you are trying to do with your formula, but what you are
actually doing is firstly testing to see whether D7/C7 is greater
than -0.1. This will return either TRUE or FALSE. You are then testing
whether the TRUE or FALSE is less than zero. Neither of them is less than
zero, so the complete formula will always return FALSE, and hence you won't
satisfy your conditional formatting test.
--
David Biddulph

"Pierre" wrote in message
...
C7 is 38,211
D7 is -2,109

D7 is conditionally formatted as follows:
Formula is: =(D7/C7(-0.1)<0)

(It should turn yellow. It doesn't)

Am I missing an operator of sorts before the last <0?

TIA for ideas.

Pierre