Final answer:
The price of the new Avengers game was reduced by 30%.
Step-by-step explanation:
To find the percentage decrease, you need to calculate the difference between the initial price and the final price. Then, divide that difference by the initial price and multiply by 100 to find the percentage.
In this case, the initial price is $60 and the final price is $42. The difference is $60 - $42 = $18. So, the percentage decrease is ($18 / $60) * 100 = 30%.