Suppose that the populations of the united states and china both increase by 12 million people in one year. what would be the relative changes that each country underwent?

1) if you assume that the u. s. population is about 300 million, an increase of 12 million would result in a relative change of ? %

2) if you assume that china has about 1 billion people, an increase of 12 million would result in a relative change of ? %