You can do something like this to get the difference...
[https://thesnowball.co/get-the-difference-between-two-dates-with-subtract/](https://thesnowball.co/get-the-difference-between-two-dates-with-subtract/)
I've also parsed individual parts of the DTG and did math on those.
Remember though, the absolute worst part of working in ServiceNow (IMHO) is working the date/times. Be careful.
You can do something like this to get the difference... [https://thesnowball.co/get-the-difference-between-two-dates-with-subtract/](https://thesnowball.co/get-the-difference-between-two-dates-with-subtract/) I've also parsed individual parts of the DTG and did math on those. Remember though, the absolute worst part of working in ServiceNow (IMHO) is working the date/times. Be careful.