Final answer:
The group in the United States with the predicted highest percentage increase by 2050 is the Hispanic population, driven by higher birth rates and immigration. Additionally, the elderly population is increasing, particularly among those 85 and older, with the dependency ratio expected to climb as the baby boomers age.
Step-by-step explanation:
According to projections from the U.S. Census Bureau, the percentage of Americans that is predicted to increase the most by 2050 is the Hispanic population. This change is attributed to a combination of higher fertility rates among Hispanics compared to other ethnic groups and ongoing immigration patterns. In addition, the population of those aged 65 and over is also increasing significantly, with a particular surge in those aged 85 and older. The dependency ratio, which measures the number of people 65 and older to every 100 people of traditional working ages, is expected to climb, reflecting the aging of the baby boomer generation. However, after 2030, the growth rate of the aging population relative to the working-age population is projected to rise more slowly. The overall effect is an increasingly diverse workforce and a shifting demographic profile in the United States.