If you earn 45000€ or more per year (post-tax) you are in the 1%. (According to this)
€45,000/yr is in top 1% globally, but not the top 1% for the EU. Either way, the article is discussing a tax on wealth, not income. Even if €45,000/yr was in the top 1% income for the EU, someone making that salary is extremely unlikely to have accumulated enough assets to place them in the top 1% for wealth.