On January 4, 1964 the price of a stembolt was $71.52. On January 4, 2017 the price of a stembolt was $22.90. Find the average rate of change in the price of a stembolt from 1964 to 2017. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{22.90-71.52}{2017-1964}= -0.92$ dollars per year.