SUVA, Feb. 15 (Xinhua) — The powerful eruption of the Hunga Tonga-Hunga Ha’apai volcano in Tonga on Jan. 15 and its aftermath has caused an estimated sum of 90.4 million U.S. dollars in damage, a World Bank disaster assessment report said. The damage is equivalent to about 18.5 percent of Tonga’s gross domestic product, noted the report, which is the