How to show if the figures have gone up or down

Im wondering if you guys can help.

I need to indicate if the figures for this week has gone up or down compared to last weeks figures.

So looking at the attached, I need to add a column (I5) to sheet Admitted Patients WE 20081005, so it compares the % treated in <18 wks figure by specialty to previous weeks figures on sheet Admitted Patients WE 20080921.

Ideally I would love an arrow either point up if the figures has increased or down if they have reduced.

I’m open to suggestions.


Thanks in advance