Um, no. 3.84% to 2.08% being an approx 40% reduction is exactly what is being avoided currently in research since its reduction of less than 2 percentage units. Imagine a medication that has a "20% and 40% reduction in mortality": You'd have to have more than 150 people treated to the max to save one person vs other cases (more than 75 to save vs no medication). Not 5 as your percentage implies. Not very efficient way to spend money if you ask me.

(3.84 - 2.08) / 3.84 = 45% less people dead

It's not 'my' percentage, nor subjective.

I mean you could argue the study is biased or the sample size too small, but your understanding of percentages seems flawed.

I recommend you take basic university statistics. Especially study efficacy vs effectiveness so you might have an idea how you're being mislead here.