The 21-year-old told the club's website: "I couldn't have asked for more. This week has just been incredible for me on a personal level. But the most important thing is that the team is in a very good shape.
"If I can contribute to that, then brilliant, and I hope it continues for a long time. As a forward, you are always waiting for that sort of opportunity. You have to be clever and intelligent, and when I saw the ball coming in I took a chance where it would go. Thankfully I got it right and was able to score.
"It was a huge moment for me. When the ball hit the back of the net, the noise was something else. To have 50,000 people cheering your goal was a special moment."
Perez also scored the winner in Newcastle's away victory over Tottenham Hotspur last weekend.