For 2018 Maharashtra Board OBC Cutoff marks for top20 percentile category you need a total minimum of 355 marks across PCM and One Language and any one ither subject to be in top20 percentile and eligibility to IIT/NIT.

Since your total is way above yiu shallbe eligible for sure.

https://engineering.careers360.com/articles/top-20-percentile-of-class-12-boards-for-nits-iiits-and-cftis/amp

Yiur total is approximately 375 considering PCM and English and EVS. 

EVs is Scaled upto 100marks for reference.