Change

[vijaypandey]

How can I switch back the execution of change request from flow to workflow?

[Mark Manders]

Why? Are you now using flow designer and it doesn't work? Or is it just for a certain change?

Your (work)flow is triggered by a change, so it's very easy: inactivate the flow and activate the workflow and make sure you update the trigger so you change is picked up through the workflow.
There is a catch: all changes that are already in the flow, will remain there, so you will either need to recreate them, or just have them run through the flow and just have the new ones run on the old workflow.

Having said all of this: it sounds very strange that a ServiceNow Employee is asking this on the Community, since all workflows are deprecated and flow designer is the go-to way moving forward.

[Ankur Bawiskar]

@vijaypandey 

you are having flow on change request

Any reason you want to migrate to workflow?

what did you start with and where are you stuck?

If my response helped please mark it correct and close the thread so that it benefits future readers.