Suppose oil prices increased from Rs. 99 per litre to Rs.132 per litre. The increase percentage of oil prices is:

Correct option is A

​Given:
​The initial price of petrol = Rs. 99 per litre
​New price of petrol = Rs. 132 per litre
​Formula Used:
​ $$\text{Percentage Change} = \left( \frac{\text{New Value} - \text{Initial Value}}{\text{Initial Value}} \right) \times 100$$​​​
​Solution:
​Percentage increase = $$\left( \frac{132 - 99}{99} \right) \times 100 = \left( \frac{33}{99} \right) \times 100 = 33.33\%$$