Conditional formatting

[C Tate]

I am trying to use conditional formatting so that if cell b2 is greater than
a2 the number will be coloured red. I then want to apply this to a range so
that the references will change automatically. What is the best way to do
the formula?

[daddylonglegs]

If you want to apply to B2:B10 so that all cells are coloured red if greater than column A in same row

select B2:B10

Format > Conditional Formatting > Formula is

=B2>A2

select red formatting