Battery capacity dropped

After owning the iPhone 11 Pro Max ever since it came out, my battery was at 100%. A couple months back it dropped to 99%. I’d say about less than a month it dropped to 98%, then less than a month down to 97%... ever since that my battery health capacity has been dropping significantly faster. More like a couple week now. Currently yesterday, my iPhone battery capacity was at 94%, and now today(7/18/20) its at 93%.... dropping way to fast in my opinion. What should I do?