To find the percentage change in the patient's calorie intake, we use the formula for percentage change:
\[ \text{Percentage Change} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100 \]
Here, the old value is the calorie intake from yesterday (2000 calories), and the new value is the calorie intake from today (2150 calories).
1. Calculate the difference between the new value and the old value:
\[ 2150 - 2000 = 150 \]
2. Divide the difference by the old value:
\[ \frac{150}{2000} = 0.075 \]
3. Convert the result to a percentage by multiplying by 100:
\[ 0.075 \times 100 = 7.5 \]
Therefore, the percentage change in the patient's calorie intake is 7.5%.
