Are my answers right?
(regarding percents/percent change)

The 2009 US population was approximately 307,212,123.
a. If the 1960 population was 180,671,000, the 1960 population is what percent smaller than the 2009 population?
1960’s population is 58.8% times smaller than 2009’s population.
b. What is the overall percent change in the US population from 1960 to 2009?
The overall percent change in the US population from 1960 to 2009 is 70%.

Question

Are my answers right?
(regarding percents/percent change)

The 2009 US population was approximately 307,212,123.  
a.       If the 1960 population was 180,671,000, the 1960 population is what percent smaller than the 2009 population?
1960’s population is 58.8% times smaller than 2009’s population.
b.      What is the overall percent change in the US population from 1960 to 2009?
The overall percent change in the US population from 1960 to 2009 is 70%.