What country is most dominated by Hinduism?

Answer

Nepal has the highest percentage based on population. Nepal is 89% Hindu, which is about 1900 million people and is the only official Hindu nation (https:/www.cia.gov/cia/publications/factbook/print/np.html)

India boasts the largest number of Hindu people, approximately 780 million Hindu, accounting for about 79% of their population.

Other largely Hindu countries include

Mauritius (600,000 - 52% of population)

Guyana (300,000 - 40% of population)

Fiji (300,000 - 38% of population)

Suriname (116,000 - 30% of population)

Bhutan (400,000 - 25% of population)

Trinidad and Tobago (300,000 - 24% of population)

Sri Lanka (2.8 million - 15% of population)

Bangladesh (12 million - 11% of population)