Your firm produces items called Stuff. Your firm produces $50,000$ units of Stuff per month at a total cost of $$100,000.$ Your research team has been creative at finding ways to may Stuff cheaper. A new technology they have found increases the efficiency of making Stuff and lowers the total cost to make $50,000$ units to $$75,000.$ Based on this you estimate the learning rate to be $[$x$].$ Express your answer as a percentage, e$.$g$.75\%$