All the required information's are already given in the question.Based on them the answer can be easily determined.
Total number of Kangaroos in the park = 150
Number of female kangaroos in the wild life park = 66
Then
Percentage of female kangaroos in the wild life park = (66/150) * 100
= 660/15
= 43 percent
So the percentage of female kangaroos in the wild life park is 43%. I hope the procedure is simple enough for you to understand. Using this procedure, you can easily solve problems of similar type very easily and without reuiring any help from anybody.