Answer
The percent of Hispanics in all impoverished people is approximate $22.93\%$.
Work Step by Step
To find the percent, we need the total number of people mentioned in the graph.
We find such a number by summing all the people living in poverty of all ethnicity in 2009. In detail,
$$29,830+9944+12,350+1746=53870.$$
According to the graph, there are $53,870$ people living in poverty in 2009 in the US, which is also the total number of impoverished people mentioned in the graph.
The number of impoverished Hispanic people, as shown in the graph, is $12,350$.
Therefore, the percent of Hispanic people in all impoverished people is
$$\frac{12,350}{53,870}\times100\%\approx22.93\%.$$