ITC is expected to report another challenging quarter when it announces its September-quarter earnings on Monday, November 2, with brokerages forecasting a sharp decline in cigarette volumes and profitability following the introduction of a new tax regime. Growth in its FMCG and paper businesses is likely to provide some support to the company's overall performance.Analysts expect cigarette volumes to decline around 8% year-on-year (YoY), while operating profit from the business could fall as much as 29%, as higher taxes and insufficient price increases continue to weigh on margins.Nuvama Equities expects ITC's consolidated revenue to decline 3% YoY, hurt by weakness in the cigarette business and subdued agricultural operations, partially offset by growth in FMCG.