The state with the largest percentage of poor in India is Bihar. Let's dive deeper into the reasons behind this.

1. Economic Factors:
- Bihar has historically been one of the poorest states in India, with a weak industrial base and limited job opportunities.
- The state's economy is primarily based on agriculture, which is often characterized by low productivity, lack of irrigation facilities, and dependence on monsoon rains.
- The agrarian economy is vulnerable to natural disasters like floods and droughts, further exacerbating poverty levels.

2. Population and Density:
- Bihar has a high population density, which puts pressure on resources and infrastructure.
- The state has one of the highest population growth rates in India, leading to a larger number of people being dependent on limited resources.

3. Education and Skill Gaps:
- Bihar faces significant challenges in the education sector, with low literacy rates and a lack of quality educational institutions.
- The low literacy levels contribute to a lack of skilled workforce, limiting opportunities for employment and economic growth.

4. Social and Gender Inequality:
- Bihar also struggles with social and gender inequality, which further perpetuates poverty.
- Discrimination based on caste, religion, and gender leads to limited access to resources and opportunities for marginalized communities.

5. Infrastructure and Development:
- Bihar lags behind in terms of basic infrastructure like roads, electricity, healthcare facilities, and access to clean water.
- Lack of proper infrastructure hampers economic development and inhibits poverty reduction efforts.

6. Government Initiatives:
- While the government has implemented various poverty alleviation programs and schemes, the impact on poverty reduction in Bihar has been limited.
- Issues like corruption, inefficiency in implementation, and lack of awareness among the poor about these programs hinder their effectiveness.

Overall, a combination of economic, social, and infrastructural factors contribute to Bihar having the largest percentage of poor in India. Addressing these challenges requires a multi-faceted approach that focuses on improving education, promoting economic growth, reducing social inequalities, and strengthening infrastructure.