Hi Karthick,
If you're asking whether 90% is better than 30%, then the answer is yes

When it comes to Reading Comprehension (RC), I don’t believe that there’s one specific approach that works best for everyone. I always recommend that students spend some time experimenting with different strategies to see which one best suits their memory, reading speed and English proficiency.
Having said that, when reading ANY RC passage, it's crucial that you engage 100% in the passage. So, rather than approach a new passage with dread ("I don't enjoy reading it at all"), try to feign interest ("Excellent! This passage is about stock market regulations in Peru!"). The better your engagement, the better the results. You'll find additional tips to help you better engage with the passage in this free video:
https://www.gmatprepnow.com/module/gmat- ... on?id=1123So, perhaps the process of taking notes actually decreased your engagement, and you spent more energy focusing on your note-taking.
If you're interested, we have a complete set of free videos covering all sorts of Reading Comprehension strategies:
https://www.gmatprepnow.com/module/gmat- ... prehension Cheers,
Brent