how can I change Apple ID to update Applications when it prefills with prior user Apple ID

Those purchases are tied to the other ID and can't be transferred. One option is to delete the apps/purchases made by the other ID and download them using the new ID if desired. If necessary, check your purchases history to see which apps/purchases weren’t made by the current ID. 

Purchase History Review

Or you can try to set up Family Sharing to keep access to your purchases.

Family Sharing

Family Sharing - Set up