In the context of online training and certification courses, a company is evaluating the effectiveness of its training program based on completion rates and subsequent employee performance metrics. The company has two groups: Group A, which completed the training program, and Group B, which did not. After the training, the performance of Group A was measured, and it was found that 80% of the employees met or exceeded their performance targets, while only 50% of Group B did. If the company had 200 employees in Group A and 150 in Group B, what is the percentage increase in performance success from Group B to Group A?