80% Battery charged

Hi, I'm new here! I just got my 2024 ID.4 AWD Pro S last Friday, and I'm also new to the world of electric vehicles. I haven't used it much this past week since I mostly work from home. However, I have a question: I drove about 20 miles at an average speed of 73 mph in an outside temperature of 25°F. I charged my ID.4 to 81%, but after that drive, the battery dropped to 69%. Is this a normal efficiency, or should I expect better? I'm eager to learn how everything works! Thank you!