Passengers involuntarily downgraded — meaning made to travel to travel in a class lower than the they booked on and had paid for — will now get 75% of their cost of ticket refunded for domestic flights and upto 75% for international flights.

from Times of India https://timesofindia.indiatimes.com/business/india-business/downgraded-involuntarily-airlines-to-refund-up-to-75-of-ticket-cost-to-flyers-dgca-amends-rules/articleshow/97313055.cms