hello there

usually du deducts 2.5- percentile on changing stream but as per an indianexpress article this year the marks deduction policy has been withdrawn .

https://indianexpress.com/article/education/du-admissions-2020-du-admissions-2020-no-deduction-on-change-of-stream-single-form-for-all-colleges-check-major-changes-du-ac-in-6468296/#:~:text=Among%20major%20changes%2C%20the%20university,to%20apply%20for%20BA%20courses.

checkout the article

you can also visit the college official website to know the exact criteria

best wishes