The renewal of the assortment represents the difference in number of products (GTIN) between your innovation and your product attrition, ie the difference between the number of new products and the number of products inactive. The indicator makes it possible to measure the evolution of your assortment width in number of products.
Renewal of the assortment = Innovation in number of GTINs - Attrition in number of GTINs
For a market made up of 2,000 products:
200 products did not have sales in your analysis period, but were sold in the same period the previous year, these 200 products represent assortment attrition.
400 products had sales in your analysis period, but were not sold in the same period the previous year, these 400 products represent the innovation of the assortment.
Renewal of the assortment = 200 = (400 - 200)
The assortment renewal indicator can be translated into English as "Renewal products assortment" or RPA.
The renewal of the product assortment can also be studied in sales value or volume, to measure the impact of product renewal on sales.
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