On December 3rd, I fully charged my car (405 km), and by December 4th, it was down to 63% (250 km). I actually drove 86 km, which used up 37% of the charge (155 km). I had the AC on at 29°C with the fan on level 3 the whole time. I commute from rural to urban areas, mostly on highways. The range efficiency was 86÷155＝0.5548387097, approximately 55%. The temperature these days has been between 3 and 10°C. I want to ask fellow car owners, is this situation normal?

Is it normal for a 2019 model with a range of 405 km to drop 21 km of range after driving 12.8 km? Any insights, experts?