The anniversary date of the founding of the first store in the chain where you work as marketing manager is coming up. Across the globe, the chain has 186 stores with just over 322,000 customer loyalty card holders. On the day of the anniversary, there is a tradition that the stores open an hour early for customer loyalty card holders only to buy products at a discount percentage equal to the number of years the stores have been open.

This year, the discount will be 38 percent. The CEO has decided that this discount is too high and has cut it back to 20 percent.

Your task: You need to send a tweet out to all 322,000 card holders warning them in advance about the drop in the discount this year.