My parents yell at me for everything!!!??!?

First of all my parents think that an 89% average is bad while my friend's parents think 80%. So I got an 93% which was one of the highest marks in my grade. I showed it to them and i was expecting them to be happy. But no! They yelled at me for not studying enough! Wtf! This is literally my daily routine : wake up, go to school, come back and take a shower, have lunch/dinner, study, sleep. That's it. Sometimes I even study until midnight. Then i told them about how their expectations are too high and they just yelled even louder, the neighbours actually heard us, so now I'm embarrassed and grounded. I'm sick of this. They're never happy with what i do. You know what? I dont even care about my grades. I dont mind failing. But i try to get good grades so they don't yell at me. But what do they do? Yell at me. They even yelled at me when my little brother broke his arm! The day he broke his arm he was at home and I was at my friends house yet somehow it's my fault! Once my mom yelled at me when the power went out! Why and how the hell is it my fault!?!? Sometimes i feel like they yell at me for fun. And they also spoil my little brother. I already know that they like him more than me cuz hes younger but it's not my fault i was born first! And i hate my brother. He always annoys me and i get blamed for it. My friends' parents actually try to make their kids feel appreciated :/