The charts show the effect of an interest rate adjustment on an adjustable-rate mortgage. Before adjustment Component Cost (P) Principal $200,000 (R) Monthly interest rate point 4 percent (n) Total number of monthly payments remaining 360 (M) Monthly payment 1 dollars comma 059 point 8 5 After adjustment Component Cost (P) Principal $187,000 (R) Monthly interest rate point 5 percent (n) Total number of monthly payments remaining 336 (M) Monthly payment 1 dollars comma 162 point 5 6 The change in interest rate shown in the charts resulted in