Adani-group owned Ambuja Cements’ consolidated profit for the September quarter crashed 90% year-on-year as high costs hit profitability, and as the impact of a high base in the previous year played out.Its consolidated net profit for the quarter stood at Rs 236 crore. This compares to Rs 2,336 crore a year ago, which had a tax write-back of Rs 1,710 crore. Consolidated revenue for the quarter remained flat at Rs 9,197 crore as compared to the Rs 9,185 crore a year ago.