Gordon, you must present only one trending statement in the Task 1 essay. You have 2 trending statements indicated in this analysis. One at the beginning and one at the end. To quote:
Overall, most of the female employees did the non-manual job while manual work is the dominant occupation among men.
In brief, the employment pattern in manual nature shares similarity between men and women, but the non-manual nature shares differences
Both of these qualify as trending statements. Therefore, you should combine these 2 separate trends into one presentation sentence within the summary overview. Speaking of the summary overview, you did not completely indicate the full information that was presented in the pie charts. You also should not say "above" because the assumption is that the reader will not have a copy of the chart so you need to describe it from scratch. You could have written the summary overview in a more complete manner as follows:Two pie charts are provided for comparison regarding the employment trends between men and women in Great Britain. The year for comparison provided was 1992. This essay will analyze the information as presented in the charts and include information about comparison points where possible. There overall trend that can be seen within the charts indicates that the females dominated the non manual work while the men dominated the manual side.
By the way, while that particular country is called the UK in general, the chart indicates that the information is from Great Britain. In order to make sure that the information you are presenting is always accurate, you cannot change the references in the chart. If the chart says Great Britain, then you should write Great Britain, regardless of how the whole world recognizes that particular country. This is part of the task accuracy consideration. How well do you present the information from the chart? How accurate is your information? That is why you cannot change the references in the presentation.