Sammy decides to purchase a Playstation game that was originally priced at $50. To his surprise, when he was checking out, he was only asked to pay $35. What is the percent of change?

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?