Implementing Change- Power point slides (2)

Looking for two PowerPoint slides with a reference slide on  the market introduction of a particular consumer product that underwent some sort of change (e.g. product was picked up by another company, new and improved version of the same product, distribution of the product changed). For this task the two products are Coca cola altering its recipe to coke from its original formula and McDonalds changing its french fries recipe.The bullet point to cover is:

  • How might the companies effectively evaluate the success or failure of the change?