On January 4, 1959 the price of a stembolt was $66.24. On January 4, 1979 the price of a stembolt was $28.75. Find the average rate of change in the price of a stembolt from 1959 to 1979. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{28.75-66.24}{1979-1959}= -1.87$ dollars per year.