A manufacturing company that produces one single type of a product has a total fixed cost of 4.000.000 TL, a contribution margin rate of 80%, and a unit selling price of 100 TL. The current operating profit level of the company is 4.000.000 TL. The product of the company has a price elasticity which is greater than one, implying that when the company decreases its unit selling price, the quantity sold will increase more. The CEO wants to exploit the advantage of the price elasticity of the product and wonders whether she could increase the profitability of the company next year by decreasing the selling prices. The cost accountant provides the following information in order for her to make a rational decision. At which rate should the company make the price reduction?