Change in demand refers to the overall shift in the demand curve due to factors like income, prices of related goods, consumer preferences, and more. This means that at every price level, consumers are willing to buy more or less of a good or service. Change in quantity demand, on the other hand, refers to movement along the demand curve due to a change in price. This means that at a specific price level, consumers are willing to buy more or less of a good or service.
