Question 1161715
Assuming random sample and normal distribution, the latter of which is reasonable given the sample size,
Ho:p1=p2
Ha: they aren't equal.
alpha=0.05 p{reject Ho|Ho true}
test stat is a z=(p1-p2)/sqrt ((p1(1-p1)/n1)+(p2(1-p2)/n2))
reject Ho for |z|>1.96

Calculator STAT TESTS 6 enter and fill in what is needed 
to do this need to convert the 43% of 899 to a number, so multiply them. I would round to an integer, since it is people and that would be 387
For the 50%, use 176 

z=-2.27 which means reject Ho and conclude the two proportions are different (or didn't come from the same population, another way to say it). 
p value=0.02

One will get a slightly different answer by using 0.43 and 0.50 in the formula above, but the difference will be slight and the conclusion unchanged.