The 2020 Mo Ibrahim Index on African Governance (IIAG) has ranked Nigeria 34th of the 54 countries reviewed.
The annual report analyses the advancement in administration management of African countries.
The IIAG measures safety and the rule of law, participation and human rights, sustainable economic opportunity, and human development.
Noting that 22 nations improved in foundations for “economic opportunity and development”, the report stated that Nigeria declined.
It said Africa’s most populous country and some others witnessed worsening “security and rule of law, rights and inclusion”.
These were part of the factors that caused a decline in the overall progress for the first time in a decade.
The assessment mentioned the End SARS protest, a peaceful youth-led demonstration against police brutality that went awry, resulting in deaths and destructions.
IIAG found that 60 percent of Africans live in nations where governance is better in 2019 than in 2010.
The six top-scoring countries are Mauritius, Cape Verde, Seychelles, Tunisia, Botswana and South Africa.
The Gambia -16th, Ivory Coast – 18th, and Zimbabwe – 33rd, were among the five biggest advancers.
Somalia remain at the bottom – 54th, but is the 7th most improved in the last 10 years.
Despite security challenges precipitated by al-Shabaab militancy, the report observed an improvement in governance, infrastructure and gender equality.