In 2011, according to census, Roman Catholicism was again the largest religious denomination with 285,671 followers (21.6% of the total population), having declined from a membership of 289,711 in 2000 (26% of the population). Other religious denominations that experienced decreases in their membership in 2011 were Hinduism (from 22.5% in 2000 to 18.2% in 2011), Anglican (from 7.8% to 5.7%), Presbyterian/Congregational (from 3.3% to 2.5%) and Methodist (from 0.9% to 0.7%). The number of persons claiming affiliation to Pentecostal/Evangelical/Full Gospel more than doubled from 76,327 in 2000 (6.8%) to 159,033 in 2011 (12.0%). The number of Muslims slightly increased but as proportion of the total population there was a decrease from 5.8% in 2000 to 5.0% in 2011. The category ‘None’ witnessed a small increase from 1.9% to 2.2%, while those who did not state a religion increased significantly, from 1.4% to 11.1%. 1.2% of the population are adherents of Bahai. The African religions and specifically Orisha have become institutions in Trinidad and Tobagos society.They serve not only the obvious religious needs but also as a source of inspiration for personal identity. Many people, motivated by the need to re-claim their African heritage can now openly support these religions because they see in them a source of understanding and a coming to terms with their enslavement and the colonial past.
Question: How many percentage did Presbyterian/Congregational experienced decreases in their membership in 2011?
Answer: .8