Answer:
20%
Step-by-step explanation:
4/5 = 0.80
Convert the decimal to a percent by moving the decimal 2 places to the right. The number becomes 80. [That] would be the percent of people that do own a phone in the U.S. To get the remainder, or the percent of people that do not have a phone, subtract 80 from 100 and you will get 20.
