Final answer:
The percentage change in the new temperature from the previous temperature is -56.25%.
Step-by-step explanation:
To find the percentage change in temperature, we need to compare the new temperature with the previous temperature. The previous temperature was -16°C, and it decreased by 9°C, resulting in a new temperature of -25°C. The percentage change can be calculated using the formula:
Percentage Change = (Change in Temperature / Previous Temperature) * 100
Substituting the values:
Percentage Change = (-25°C - (-16°C) / -16°C) * 100 = -56.25%
The percentage change in the new temperature from the previous temperature is -56.25%.