35% mortality rate reduction, compared with remdesivir 40%

Remdesivir reduces mortality rate from 11.9% to 7.1% for tested cases, but not statistical significant even though it is close to. That is 40% reduction. Not sure if this 35% reduction is statistical significant or not, and if it is from controlled clinical trial or not. 

But considering with the above data, I don't get what Trump said in the press conference, "it is a HISTORICAL annoucement".