the difference between the mpc and the apc is that multiple choice 1 the mpc is total income divided by total consumption, whereas the apc is the change in income divided by the change in consumption. the mpc is total consumption divided by total income, whereas the apc is the change in consumption divided by the change in income. the mpc is the change in consumption divided by the change in income, whereas the apc is total consumption divided by total income. the mpc is the change in income divided by the change in consumption, whereas the apc is total income divided by total consumption.