Retail tomato prices declined 22.4 per cent month-on-month on improved supplies across the country, the Consumer Affairs Ministry said on Sunday.The all-India average retail price of tomatoes stood at Rs 52.35 per kg on November 14, down from Rs 67.50 per kg on October 14, according to an official statement.During the same period, modal wholesale prices at Delhi's Azadpur mandi witnessed a sharper decline of nearly 50 per cent to Rs 2,969 per quintal from Rs 5,883 per quintal, driven by increased arrivals.