What is the percent change of 92 to 69

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%