Answer:
To calculate the percent decrease in the number of rejected items, we can use the following formula:
Percent decrease = ((initial value - final value) / initial value) x 100
In this case, the initial value is 372 (the number of items rejected in the first period) and the final value is 323 (the number of items rejected in the second period).
So, the percent decrease is:
((372 - 323) / 372) x 100 = 13.1%
Therefore, there is a 13.1% decrease in the number of rejected items from the first period to the second period.