A BTU (British thermal unit) is the energy required to raise 1lb of water 1 degree Fahrenheit…which may actually be even dumber, since it’s temperature sensitive to begin with. Dumbest of all, the Brits don’t use that unit very often. The US, and, I assume, Liberia use it all the time.
FWIW, a 20% drop is borderline catastrophic for a major company. The squeeze it puts on their supply chain, ability to make payroll, and interest rates on borrowing going up, it could be enough to create a death spiral. I think ubisoft is probably managed well enough to deal with this, but this is definitely a serious situation for them.