I'm using Excel again, and I'm a little rusty. I'm using it not only because I don't have iWork, but I'm using it to keep track of my teenage finances. Each line has a date, the total amount of money from all of my funds, the total, and I want a difference column to show the difference between the last entry's total and this entry's total. Sometimes it may be positive, but sometimes negative. I can't remember the function that equates that. Anyone remember? Thanks.