What is best buy's net income growth rate from last year to this year?

I have calculated is to be down -30% and even though I came out with a 30% reduction in income last year to this year, MSN money.com has calculated it to be a reduction of only -12.3% (follow the link to see a href="http://moneycentral.msn.com/investor/invsub/results/compare.asp?symbol=US%3aBBY)." rel="nofollow"http://moneycentral.msn.com/investor/inv…/a If anyone can further explain where the difference lies, that would be great. Thanks!