Quantifying impact
The number 20% gives a tangible image of the applicant's impact across different companies. It's not just about stating that you've helped decrease churn rate, but showing how significant that change was. It's a good example of how you can make your achievements more meaningful.
Showcasing use of relevant skills
Firstly, stating the ability to use machine learning algorithms underlines your expertise in a critical area for a Data Scientist. It directly tells hiring managers that you have the know-how in one of the most sought-after skills in the industry.