Comparing this year's sales to last year's sales by looking at the current sales derived only from activities that were in effect the previous year as well. This method would ignore sales that were only possible this year, for reasons such as a merger or acquisition or the launch of a new product.

Related information about like-for-like sales:

1. Like-For-Like Sales Definition | Investopedia
   Like-for-like sales is a method of valuation that attempts to exclude any effects of expansion, acquisition or any other event that artificially enlarge a company's ...
    
2. Like for like - Wikipedia, the free encyclopedia
   Investopedia explains Like-For-Like Sales. Using like-for-like sales is a method of valuation that attempts to exclude any effects of expansion, acquisition, ...
    
3. What is like-for-like sales? - InvestorWords.com
   Definition of like-for-like sales: Comparing this year's sales to last year's sales by looking at the current sales derived only from activities that were in effect the ...
    
4. UPDATE 1-H&M October like-for-like sales unexpectedly drop ...
   Nov 15, 2012 ... Comparable sales fall 5 pct vs +0.4 pct forecast inReuters poll* Total sales +4 pct vs consensus +9 pct* Analyst cites weather, European ...
    
5. Like-for-like
   Most companies in the FTSE general retailers and food & drug retailers sectors disclose like-for-like numbers - at least like-for-like sales growth. Like-for-like ...
    
6. Like-for-Like Sales - Financial Dictionary - The Free Dictionary
   The comparison of a company's sales over a given period of time to the sales from a different period of time that resulted from the same or similar activities.
    
7. H&M Like-for-Like Sales Plunge 5% In October - WSJ.com
   Nov 15, 2012 ... DOW JONES NEWSWIRES. STOCKHOLM (Dow Jones)--Hennes & Mauritz AB ( HM-B.SK), the Swedish clothing retailer, Thursday said sales ...
    
8. What is like-for-like sales? - BusinessDictionary.com
   Definition of like-for-like sales: The method of comparing current year sales figures to prior years sales figures to determine what type of products moved quicker ...