Assuming the goods are normal, and not inferior or a luxury good, and demand and supply is elastic, If the market price of a good is above the equilibrium price- the value set by the intersection of demand and supply, then there is less incentive to buy but a greater incentive to sell. So, buyers demand a smaller quantity as they can no longer afford or are willing to spend on the good, and producers produce a higher quantity to now receive a higher price for their good. The higher price may also incentivise other producers to join the market as well which also increases the quantity produced. As a result, the demand curve shifts in and the supply curve shifts out, so as demand falls and supply expands, goods should return to equilibrium price.