Creativity’s bottom line: How winning companies turn creativity into business value and growth

While this article does have a sales/marketing emphasis, there's no doubt that that McKinsey’s analysis has demonstrated a quantitative measure that could be used to examine the linkage between creativity and business performance.

https://www.mckinsey.com/business-functions/digital-mckinsey/our-insights/creativitys-bottom-line-how-winning-companies-turn-creativity-into-business-value-and-growth