I don't know the relevance of 25% vs. 19.9% either. I can only guess MYL made an allowance for the creep provisions in the Corps Act. Perilya could have crept 5% over the past 12 months assuming that are entitled to. Perhaps someone more learned in this space could provide greater context.
MYL Price at posting:
8.5¢ Sentiment: Buy Disclosure: Held