On January 4, 1978 the price of a widget was $50.16. On January 4, 2004 the price of a widget was $44.62. Find the average rate of change in the price of a widget from 1978 to 2004. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{44.62-50.16}{2004-1978}= -0.21$ dollars per year.