How much has the population of tigers dropped in past 100 years?

According to the World Wildlife Fund (WWF), the global population of wild tigers has declined by 95% in the past 100 years, from an estimated 100,000 tigers at the beginning of the 20th century to just 3,900 tigers remaining in the wild today. This alarming decline is largely due to habitat loss, poaching, and illegal trade in tiger parts.