1. The problem is to calculate the value of $-0.2675$ per hour multiplied by 7 days. 2. We use the formula for multiplication of a rate by a time period: $$\text{Result} = \text{Rate} \times \text{Time}$$ 3. Since the rate is given per hour and the time is in days, we first convert days to hours: $$7 \text{ days} = 7 \times 24 = 168 \text{ hours}$$ 4. Now multiply the rate by the total hours: $$-0.2675 \times 168$$ 5. Calculate the product: $$-0.2675 \times 168 = -44.94$$ 6. Therefore, the final answer is $$\boxed{-44.94}$$, which represents the total change over 7 days at the given hourly rate.