11 pro max battery issue

i am using 11 pro max from last 74 days and today it’s battery capacity is 94 per . I don’t know what’s wrong with my phone . Lastly i seen battery capacity in 2nd month after purchasing and it was 100 per. I am doing one new thing is that i started playing pubg from last 8 days and also today morning at 9 am battery capacity was 95 per but when I checked it again at 2 pm it was 94 per, is there something wrong with my phone or it is normal?