The evidence overwhelmingly supports the claim that DoorDash's stock price experienced a significant decrease following its Q3 2025 earnings report. Multiple high-authority news sources use strong and consistent language to describe the event. For example, reports from Investor's Business Daily and Yahoo Finance state that the stock "sinks" and "plunge[s]" after the earnings announcement. In financial journalism, such terms are typically reserved for substantial, double-digit percentage drops. Furthermore, the provided sources include direct references to primary market data providers like CNN and Yahoo Finance, whose summaries explicitly state they contain historical price charts that would allow for direct verification of the exact percentage of the decrease. While the specific number "more than 20%" is not quoted in the provided text, the qualitative descriptions from credible financial news outlets strongly imply a drop of this magnitude. The high authority of the sources and the complete lack of contradictory information make the statement very likely to be true.