Leicester draw a response six minutes later, as James Maddison combined with Ben Chilwell for a low strike which Martin Dubravka saved easily.
"They are a very honest group of players and we will go away and analyse it and see where we can be better".
"I always believe in the cross, Matt Ritchie has got a good delivery so it was a great goal".
Leicester had won four in a row, with Brendan Rodgers among the nominees for March's Premier League manager of the month award after succeeding Claude Puel in February.
"The team has achieved great things but maybe with another manager we would have struggled even more", he said. We couldn't break down their defence.
"He breeds confidence into players, he's helping to bring the younger players through, does a lot of work on the training pitch and his man management is really top".
"The speed of our passing in particular can be much better".
"You can do everything right with your tactics, but the other team has one player that can make the difference".
Their only clear opening came in the 80th minute when Jamie Vardy lifted the ball over the bar.
"We had two or three counter-attacks that we could have had a little more composure and scored more".
Perez nearly squeezed home the second goal for Newcastle with 14 minutes remaining after getting on the end of a loose ball at the near post but Schmeichel was alert to make the save this time.
Brendan Rodgers hopes Leicester will learn from a disappointing display that saw them lose 1-0 to Newcastle on Friday Night Football.
Newcastle have now picked up 16 points away from home in the Premier League this season (P17 W3 D7 L7), as many as they earned in the whole of the 2017-18 campaign on the road.
Newcastle have lost their last two Premier League games, failing to score each time.