In the excel file "Cross country tables" check Table III.1.83: Gross replacement rate at retirement (old-age earnings-related public pensions, %). The gross replacement rate is defined as gross pension entitlement divided by gross pre-retirement earnings.
For those that will retire by 2050, it would be better that they do not live in Latvia, Lithuania or Poland that have low replacement rates between 23 and 25%. Austria and Luxembourg have the highest rates above 50% in 2050. Spain, Latvia and Portugal are the countries that will lose the most from 2019 until 2070, more than 30% each while the European Union average loss is just 8.9%.