China's EV giant BYD shares have shed $45 billion in four months after Q2 profit fell 30%-its first drop in three years. EV maker cuts 2025 deliveries to 4.6 million from 5.5 million, as rivals Geely and Leapmotor gain share and Beijing cracks down on price wars. Overseas sales are seen at up to 1 million units in 2025.