Alan Pardew's men surprised many last season by managing a sustained challenge for Champions League qualification, only to falter on the final day of the season and finish fifth.
Newcastle have notched up nine points from their first seven games, leaving them in 10th position and Perch, who has played in a variety of positions already this season, has admitted that more is to come from the Magpies.
|14/1||Newcastle are 14/1 with William Hill to beat Sunderland 2-0 on October 21|
"It's been a bit up and down performance-wise," he told the club's official website.
"We've pulled off some good results and had a few wobbly performances, but overall I think we can look back and say we are quite happy with what we've done so far.
"It goes without saying though that there's room for improvement and that's what we are intending to do over the next few weeks."
Newcastle's first Premier League fixture after the international break comes in the shape of the Tyne-Wear derby against local rivals Sunderland at the Stadium of Light on October 21.