Defining “poverty” is a problem. Some people (using Brooklyn as an example) consider poverty to mean they can’t afford to go to the mountains for the summer. Many Americans would consider inability to own a house or a car to indicate poverty. Many people are officially considered to be in poverty, yet also suffer from diabetes (consider that to have type 2 diabetes, one almost certainly needs to be overweight, which implies more than adequate food).
One should ask what percentage of Israelis lack housing (and in particular lack housing with running water and indoor plumbing), lack the ability to afford Torah education for their children, lack enough to eat, are unable to afford sufficient clothing and are forced to wear rags or go barefoot. A good reference point is to examine the standard of living most Jews had in the 19th century (whether in the Russian Empire or the Ottoman Empire) and compare it to today.