Multiple authoritative and relevant sources report that a significant decline in Bitcoin's market price led to an estimated $300 million reduction in the value of El Salvador's Bitcoin holdings. Bloomberg and Yahoo Finance both directly address the approximate $300M figure and tie it to the country's reserve holdings, citing either official statements or on-chain wallet tracking data. These independent yet consistent reports strengthen the likelihood that the statement accurately reflects the situation. The Facebook-linked El Salvador Perspectives reporting further corroborates the figure, noting that this loss occurred over a specific period and was explicitly related to Bitcoin's value drop. The consistency across credible sources with high relevance, combined with the absence of contradictory evidence, supports the conclusion that the statement is true. Minor uncertainty remains due to the inherent volatility of Bitcoin's market value and the possibility of measurement differences in estimating holdings and losses, but overall the claim is well-supported.