You took out a mortgage 3 years ago. At that time, it was a 22-year mortgage with an APR of 6.8% for $1,542,997. The payments are made monthly. How much would your monthly payment change if you want to refinance the mortgage today for 9 years at an APR of 5.7%? We are looking for a change in monthly payments (new minus the old). If the difference is negative (i.e., mortgage payment has declined), input it with a '-' sign. If the difference is positive, there is no need to include the + sign.