Report custom fields

[Miguel Angel Salas Solis]

Hi, I created a JIRA Project, and we have several issue types (i.e. Payroll) in each of them we have available these 2 fields:

Employees processed (Numeric, and indicates the number of employees that were processed on a given payroll period)

Employees with Error (Numeric, and indicates the number of employees that were processed with any kind of error such as overpayment)

Is there a way to pull out a report with these fields? What I need to know for instance is that in the last 3 months we processed payroll for 4,500 employees and we had 89 errors. Is this possible?

In addition to this, is there a way to set an additional custom field to determine accuracy? (i.e. Accuracy = (Employees proccessed - Employees with Error) / Employees processed.

Thanks in adance,