Simple. YoY=Current year minus previous year. I just did in in Excel. It works.
On Tue, Jun 29, 2010 at 12:53 PM, John Aldrich <[email protected] > wrote: > Correct. How do I make Excel do it correctly? > > > > [image: John-Aldrich][image: Tile-Tools] > > > > *From:* Kevin Lundy [mailto:[email protected]] > *Sent:* Tuesday, June 29, 2010 12:47 PM > > *To:* NT System Admin Issues > *Subject:* Re: Excel question > > > > Basic math still rules. I believe what you are looking for is year over > year change. In which case you subtract. YoY=current year minus previous > year. > > So, if current year is negative, -4378.87. Prior year is positive, > 4868.52, you subtract -4378.87-4868.52 for a result of -9247.39. Your sales > are down 9247.39 compared to this time last year, and down is negative. The > basic excel subraction works. > > > > Now reverse it. If this time last year sales were down -4868.52 and this > year sales are at 4378.87, you still subtract current minus previous. This > time the result is positive indicating that sales are up 9247.39 compared to > the previous year. > > On Tue, Jun 29, 2010 at 12:29 PM, John Aldrich < > [email protected]> wrote: > > I don’t think so… Here’s a real-world example from one sales region… > > Last Month: $0 > > YTD – this year: -$4378.87 > > Same Month 2009: $522.25 > > YTD 2009: $4,868.52 > > > > I want to see what the difference is between the two sets of numbers. Would > I not want to **subtract** the 2009 YTD from the current 2010 YTD? In > which case I’d end up **adding** the two for a difference of $9247.39. It > didn’t work if the 2009 YTD was negative, which is why we put the > conditional in. > > > > > > > > [image: John-Aldrich][image: Tile-Tools] > > > > *From:* Kevin Lundy [mailto:[email protected]] > *Sent:* Tuesday, June 29, 2010 12:13 PM > *To:* NT System Admin Issues > *Subject:* Re: Excel question > > > > Why do you need an IF statement. Enter the number as a negative. Sum > them. 1 plus -1 equals 0. > > On Tue, Jun 29, 2010 at 12:05 PM, John Aldrich < > [email protected]> wrote: > > I’ve got a spreadsheet I update once a month for one of our sales managers. > What it shows is the sales for the previous month, the sales for > year-to-date, the sales for the same period last year and the sales for the > year-to-date last year. Sometimes one of the numbers is a negative number > (i.e. if we had to bring the carpet back due to a defect or something.) I’ve > got it working partially, but sometimes the math doesn’t seem to work. How > would I go about writing my formula to test whether either number in a > matched set (i.e. last month and the same period last year) are negative and > then either add or subtract based on which number is negative? > > > > Here’s the current formula: =IF(C148<0,C148+G148,C148-G148) > > I’d like to test to see if G148 is negative (in this case, it is) and if > C148 is negative (in this case it is NOT.) Sometimes both will be negative, > sometimes one will be negative. I want to do the math properly depending on > which is negative. There are cases where it is pretty obviously NOT working > correctly, but I’m not sure how to correct the formula. > > > > Thanks… > > > > [image: John-Aldrich][image: Tile-Tools] > > > > > > > > > > > > > > > > > > > > > > > > > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
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