During one period, a bakery rejected 372 items as unfit for sale. In the following period, the bakery rejected only 323 items, a decrease in unfit bakery items. What was the percent decrease?

Problem Solution requires: 

1) Showing all the equations and calculations you use for each step or change in the numbers like rounding in the problem solution, 

2) Each step requires an explanation of what is being done and why it is being done and 

3) Each answer requires a Findings Statement, a separate sentence with just the answer and what it means.