How to switch between remote host and localhost while SSHing?

How to switch between localhost and remotehost while sshing?

localhost$ssh -l username remotehost.com
-put your password here
remotehost$
-now you are connected to remote host
remotehost$~
-press enter, now remote host goes to background and localhost shows up
localhost$
-to open the session to remote host
localhost$jobs
[1]+ Stopped ssh -l username remotehost.com
-to go back use fg command
localhost$fg %1
ssh -l username remotehost.com
remotehost$
-now you are back to remotehost session