New Delhi: The average monthly rentals in Delhi's upscale retail locations of Khan market, South Extension and Connaught Place declined by 14 per cent year-on-year during the July-September period due to COVID-19 pandemic, according to Cushman & Wakefield.In its 'Market Beat Delhi-NCR Retail Q3 2020' report, Cushman & Wakefield said the average rentals of Khan Market stood at ₹1,200 per sq ft a month during July-September, down 14 per cent from the year-ago period.