Changes in prices come from shifts in market supply, market demand, or both. Economists use comparative statics to predict changes in prices. This technique explains how changes in exogenous variables cause shifts in supply and/or demand curves, which lead to changes in prices.

What causes change in price?

Stock prices change everyday by market forces. ... If more people want to buy a stock (demand) than sell it (supply), then the price moves up. Conversely, if more people wanted to sell a stock than buy it, there would be greater supply than demand, and the price would fall. Understanding supply and demand is easy.

Which are the main factors behind price rise?

With regard to the factors contributing to the rise in the general price-level, one may mention that on the demand side the following factors have operated: rapid growth of population, increase in incomes, rising non-development expenditure of the government and increase in money supply.