Why is the market falling today? Sensex falls over 550 points, Nifty below 24,300: Key factors

The Indian stock market witnessed sharp selling on Wednesday, with the Sensex dropping over 570 points and Nifty sliding below 24,300. The decline was triggered by Tata Sons Chairman N Chandrasekaran's resignation and rising crude oil prices, dragging down major Tata Group stocks and erasing over Rs 2 lakh crore in investor wealth.