Profile -: 8/7/6
Work ex-: 18 months (till July)
23months (by December)
OBC-engineer

%ile required for calls and convert in BLACKI , Mumbai and shillong , iift-delhi

With an 8/7/6 academic profile, OBC category, engineering background, and 18 months of work experience, you have a decent profile, with work experience being the key positive. For BLACKI, you should target around 98.5–99.5+ percentile overall roughly 99.5+ for ABC, 99+ for Lucknow and Kozhikode, and 98.5–99+ for Indore. For IIM Mumbai, aim for 98.5–99+, while IIM Shillong would be around 98–98.5+. For IIFT Delhi, a target of 98.5–99+ would keep you competitive.

Overall, given your academics, engineering background and OBC category, target 99+. Your 18 months of work experience will definitely work in your favour.