Final answer:
The percent decrease in the bank account balance is 80%.
Step-by-step explanation:
The question asks about the percent decrease in a bank account balance when it goes from $300 to $60. To find the percent decrease, you can use the formula: Percent decrease = (original amount - new amount) / original amount x 100%. In this case, the original amount is $300 and the new amount is $60. Plugging the values into the formula, we get: Percent decrease = (300 - 60) / 300 x 100% = 240 / 300 x 100% = (0.8) x 100% = 80%. Therefore, the percent decrease is 80%.
Learn more about Percent decrease