The reasons for learning languages of 1000 native and non-native speakers

Hi everyone,
This is my first post and i hope i will be getting feedback from fellow forumer as i am preparing for my upcoming IELTS test.

Thank you so much!
This is link for the bar chart:

Orange column: non-native speakers
Purple column: native speakers

The bar chart presents results of a questionnaire to find the reasons for learning languages of 1000 native and non-native speakers at a university in Australia. It is clearly seen that non-native speakers have more motives for learning languages than native speakers.

The results can be devised into three main reasons: the requirements for works, the essential for studying and individual hobbies.
The requirements for works are the reasons that both students of non-native speakers and native speakers choose most. 90% and 92% of non-native speakers think that learning language is useful for work and improves job prospects; 52% and 70% of native speakers have the same ideals. In contrast, just only 25% of native speakers and 65% of non-native speakers consider learning languages is important for studying.

There are four reasons about individual hobbies in this chart. In this group, the least popular reason among native speakers is enjoyment and among non-native speakers is improvement own languages, while usefulness for travel has the highest rate of both.

In conclusion, it is clear that non-native speakers are more positive about learning languages than native speakers.

What this analysis shows is perfectly normal. Native speakers are more confident about their language ability. Henceforth, they will not worry too much about issues such as language barriers at work or at school. Non-native speakers, however, are more aware of this problem because of their non-native nature at the language. They require more efforts and time compared to native speakers. In short, non-native speakers have more worries than native speakers.

I have a suggestion for making the beginning clearer:
The bar chart presents results of a questionnaire distributed to 1,000 native and nonnative speakers of English studying at a university in Australia. The purpose of the questionnaire was to find their reasons for learning languages.

If you want to write clearly, it is best to avoid long sentences.

Do not say just only. Say one of those words or the other but not both:
In contrast, just only 25% of native speakers and 65% of non-native speakers consider learning languages is important for studying.
:-)