It’s not that it has decreased; it’s related to FII. Additionally, comparing Vodafone Idea with Yes Bank is not accurate.
Yes Bank is different; it has a TTM profit of ₹1,455 crore and a YoY profit of ₹1,285 crore. Its ROCE is over 5%.
On the other hand, Vodafone Idea is a consistently loss-making company with a negative ROCE, among other issues.