By what percentage are the number of female employees of levels 'A' and 'B' taken together is greater than the number of male employees of levels 'A' and 'B' taken together?

Study the pie charts and answer the question.

In a manufacturing firm there are a total of 150 employees of levels 'A', 'B', and 'C'. Number of employees of different levels have been presented in Pie-Chart I. Number of female employees of different levels have been shown in Pie-Chart II. 40% of the employees are females.