The ability to detect the bitter taste of PTC is encoded by the dominant allele T for the PTC gene. If the individuals from a large, randomly breeding population are sampled and it is found that 42.4% of the population are non-tasters, what percentage of the population is homozygous dominant for the PTC taster gene?

The percentage of the population that is : % (give your answer to the nearest 10th of a percent)