Option Change refers to the difference in the price of an option from one point in time to another. This change in the option's price can happen due to various factors like changes in the underlying asset's price, time decay, market volatility, and interest rates. To read a Nifty Option Change, determine which specific option contract you are interested in. This includes noting the underlying asset (e.g., a stock) and the type of option (call or put). Decide on the timeframe you want to analyse.