To check progress of SQL Server Backup or Restore process

SELECT

   r.session_id

 , r.command

 , CONVERT(NUMERIC(6,2), r.percent_complete) AS [Percent Complete]

 , CONVERT(VARCHAR(20), DATEADD(ms,r.estimated_completion_time,GetDate()),20) AS [ETA Completion Time]

 , CONVERT(NUMERIC(10,2), r.total_elapsed_time/1000.0/60.0) AS [Elapsed Min]

 , CONVERT(NUMERIC(10,2), r.estimated_completion_time/1000.0/60.0) AS [ETA Min]

 , CONVERT(NUMERIC(10,2), r.estimated_completion_time/1000.0/60.0/60.0) AS [ETA Hours]

 , CONVERT(VARCHAR(1000),

      (SELECT SUBSTRING(text,r.statement_start_offset/2, CASE WHEN r.statement_end_offset = -1

                                                             THEN 1000

                                                             ELSE (r.statement_end_offset-r.statement_start_offset)/2

                                                        END)

        FROM sys.dm_exec_sql_text(sql_handle)

       )

   ) AS [SQL]

  FROM sys.dm_exec_requests r

 WHERE command IN ('RESTORE DATABASE', 'BACKUP DATABASE')