In general equilibrium analysis, on the other hand, the prices and quantities of all markets in the economy are considered simultaneously, including feedback effects from one to another, though the assumption of ceteris paribus is maintained with respect to such things as constancy of tastes and technology.
Mas-Colell, Whinston & Green's widely used graduate textbook says, "Partial equilibrium models of markets, or of systems of related markets, determine prices, profits, productions, and the other variables of interest adhering to the assumption that there are no feedback effects from these endogenous magnitudes to the underlying demand or cost curves that are specified in advance.
"[1] General equilibrium analysis, in contrast, begins with tastes, endowments, and technology being fixed, but takes into account feedback effects between the prices and quantities of all goods in the economy.
They will generally affect the exact amount of the original good's price change, but not the direction.
Partial equilibrium analysis examines the effects of policy action only for one good at a time.