Here are 8 ways to rewrite the title "8 Ways to Track ROI and Demonstrate the Team’s Value" in a more formal tone:

1. Measuring Team Performance and Return on Investment: Eight Methodologies
2. Quantifying Team Value and ROI: An Eight-Point Approach
3. Demonstrating Team Effectiveness Through ROI Tracking: Eight Key Strategies
4. Assessing Team Contribution and ROI: Eight Practical Techniques
5. Tracking Return on Investment and Team Value: Eight Effective Methods
6. Evaluating Team Performance and ROI: Eight Recommended Practices
7. Analyzing Team Impact through ROI Measurement: Eight Core Processes
8. Calculating Team Value and Demonstrating ROI: Eight Essential Steps