16% of a number equals 16 * 1% of that number. If we know that 1% of the number is 4.6, then 16% of that number is 4.6 * 16= 73.6.
It seems like you're posting a lot of questions... If you don't understand something just ask but don't have us do your homework for you. YOu won't learn anything by just getting the answers.