Apple

I purchased a brand new M1 last April, the battery capacity has already lowered down to 90% after only 26 cycles. I'm quite concerned by how quickly the capacity is reducing considering the low number of charge cycles. Can anyone give some insight as to whether this is cause for concern? I use it plugged into the charger for the most part as I have an external moniter connected up and that would deplete the battery quite quickly if I were running on battery most of the time. I keep AlDente running in the background limiting the charge to 80% Many thanks in advance.