Here are a few options, depending on the specific focus you want:
Option 1 (Direct and authoritative):
- Study Finds 87% of Election Misinformation Originates on Social Media
Option 2 (More formal/academic):
- Research Indicates 87% of Election-Related Misinformation Is Distributed via Social Media Platforms
Option 3 (Concise and journalistic):
- Social Media Responsible for 87% of Election Misinformation, Study Reports
Recommendation: Option 1 is the most standard format for formal news reporting.