You're not understanding what is written. You can define poverty anyway you want. Making less than $5 per day. Making less than $100 per day. Pick anyone. The percentage of poor people has been dramatically falling in China and India since they liberalized.It doesn't matter who's definition it is. The point is that its not a meaningful metric. Invoking "the World Bank" as an authority doesn't change that. This metric you're touting is like saying a roach infested restaurant has on average, 2 less roaches than prior years, and calling that a "infestation decrease". As I've already demonstrated, $2 a day is about as arbitrary as it gets in terms of defining "poverty" and $1.90/day is a meaningless figure that was specifically chosen to support the narrative that "poverty" is decreasing. It's like saying that your soccer league has "substantially improved" because the top team used to win 90% of their games by at least 30 goals but now they win 90% their games by at least 28 goals. You can argue "improvement" but the improvement you're pointing to is meaningless. Tell me what percent of teams/games win against the top team compared to prior seasons... Or in this case, give me the statistics for how many more people are making $30-50K/year. There's nothing "dramatic" about an "increase" from $1 a day to $1.90 a day. You're still sick, homeless, uneducated and starving with no hope of improvement or escape.
And BTW, in many parts of the world an increase of $1per day to $1.9 per day is indeed dramatic. It can be the difference between life and death. The US is not the whole world.