John recognizes that not only will he have the costs of attending school but he will also be giving up a salary while he attends school. He figures the average salary for those with only a high school diploma is $33,176. He assumes he would receive a 3% cost of living raise each year. Determine how much money he will forgo while attending school for 4 years.

To help him determine if it really is worth it to get a college education John wants to see what the return on investment (ROI) will be 20 years after graduation. After some research John discovers that for his career choice he can expect to earn $1.6 million with a degree and $809,000 without one. What is Johns 20 year ROI?