On January 4, 1968 the price of a sprocket was $78.01. On January 4, 1990 the price of a sprocket was $77.33. Find the average rate of change in the price of a sprocket from 1968 to 1990. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{77.33-78.01}{1990-1968}= -0.03$ dollars per year.