The slide in Hong Kong’s rents is getting steeper as the coronavirus crisis and protests lead to job losses and an exodus of expats and students fleeing the city.Rents in high-end districts have been hit hardest, tumbling by up to a quarter from their peaks, according to agents, while data showed the average rate across the whole city slumped to the lowest in almost three years in February.“The virus is reducing demand for properties as people either leave Hong Kong or have less job security,”…