I bought my Macbook in Oct 2021, Until a few days from now it was all good , then suddenly I noticed that it gets drained inspite of being plugged in. Now from 3-4 days I am noticing that it drains to 84% , and then starts charging back to 100%. After having read all the threads above , I am a little concerned about the Max MAC capacity . It is now 94% . Just a few days back it was 100% . How come it's reduced so fast? Should I contact the apple support?