Mine is close to 500, thanks to periods of heavy gaming, long hours of browsing, watching newpipe and video calling. Battery in your case is not the iasue, the setup and device use is. No need for any replacements, just focus on finetuninig how you use your device. With all that said, a certain battery drain is inevitable and expected and as the battery ages, it will lose its total capacity but 200 charging cycles is way too little for that.