Hello Raunak !

Following are some good colleges in kolkata , which give specialization in BBA without Mathematics :

1. MAKAUT - Maulana Abul Kalam Azad University of Technology
2. Institute of International Trade - IITRADE
3. UEM Kolkata - University of Engineering and Management
4. PITM - Prajnanananda Institute of Technology and Management
5. Dinabandhu Andrews Institute of Technology and Management
6. Kingston Educational Institute
7. The Heritage Academy
8. Footwear Design and Development Institute
9. Acharya Prafulla Chandra College (APCC)
10. IMS - Institute of Management Study

Hope it helps !