Can you help me calculate this and explain me how you did jt please

Price Level Output Population Period 1 6 10 18 Period 2 (base year) 6 5 10 Period 3 8 8 13 Use the above information to calculate the percent change in NGDP between period 2 and 3. Express your answer as a decimal (rounded to the nearest thousandth). Question 20 6 pts Given the below table of market transaction quantities and prices, what is GDP? Price Quantity Oreos 9 7 Shoes 4 2