How to compute for percentages for Response SLAs that are met vs. breached

[Ma. Rowena D. Sta. Clara]

We are currently creating dashboards using JQL to report on Response SLAs that are met and breached. However, to compute the % of response SLAs that were met or breached vs. the standard SLA target, this is done manually which really takes time. Is there a way to make this faster where once we created the dashboard, it is automatically available, no manual computation to be done. 

Aside from this, we are looking into creating reports showing the % of various statistics such as Change Requests (according to change type/risk), % of problem records resolved on time, etc. Currently, what we can see only are counts but percentages are also important to determine the level of success or failure over the total count (tickets, service requests, problem records or change requests) of activities done. 

Thanks in advance for the tips.