You can actually have VBA code run that will check column D's values and
change the sign in the corresponding value in column E. However, THAT IS A
BAD IDEA. It's usually important to preserve the original value, so you know
whether you've flipped the sign.

Assuming that you *should* keep the value in E2, then in F2 enter the formula:

=E2*IF(D2="Refund",-1,1)

"Littlebird" wrote:

How can I do this ?

If d2=Refund then negate the value in e2.

ie make it a negative number

Cheers