Hi @paul.m.odonnell1
Welcome to the LastPass Community.
If this was a single set of credentials from Google used for several different sites, then LastPass should update that across the board.
If these were different credentials, i.e. same login name / different passwords, you may want to view the password history for each site to backtrack.
If you recently updated the account password within the past 30 days, then you may revert to the last known password and Vault save point through this location: https://lastpass.com/revert.php