Rentals of prime offices in Bengaluru and Mumbai fell 8 per cent and 6.2 per cent, respectively, during January-March 2021 as compared to the year-ago period, according to a Knight Frank report. In its Asia-Pacific Prime Office Rental Index Q1, 2021 report, the consultant said the prime office rents in the national capital region (Delhi-NCR) declined by only 1 per cent during January-March this year as against the same period of 2020.