"how is today 12% worse than yesterday. Did they go broke...

"how is today 12% worse than yesterday. Did they go broke overnight. ?Did they lose 12% of their client base ??"

Which client base are you referring to?

In my view, BRN's share price has been almost wholly disconnected from its underlying value for quite some time and is being largely driven by a combination of traders (many of whom I suspect have something akin to gambling difficulties) and naïve retail investors (most with no relevant engineering background to understand the product or sector) who blindly believed all the frenzied ramping on social media and stock market forums that BRN is an almost guaranteed ticket to great wealth.