It much looks like a dumb programmer/programming error... Code: numdecimals = 2; if (price < 1.0) numdecimals = 4; // even for percentages... :-)
Can you make money by the secret meanings behind the mysterious choice to quote percentage delta usage of 4 digits after the decimal, in instruments quoted 4 digits after the decimal? No? Then just forget about it.
Dude, it makes perfect sense to me. There are 4 decimals in $, which means it needs more decimals for the %.
schizo and Overnight, let me tell you both this: it's a mathematical nonsense. One just needs to think a little bit about it...
It seems they now have fixed it. Take a look at "% Change" for ticker METX. If they haven't fixed it, then it could indeed mean a secret signal then, what else!?...
It means that some millennial or Gen-Z programmer finally remembered him/her learning "rounding up/down" in second grade. Nah, they didn't learn it in school, because they were too busy tik-toking in class. They looked it up.