2. Find the new number produced when the given number is increased or decreased by the given percent. $250 ; 250 \%$ increase answer:

Step 1 ：The problem is asking to find the new number when the original number, 250, is increased by 250%.

Step 2 ：We can use the formula for percent increase to solve this: new number = original number + (original number * percent increase / 100).

Step 3 ：Substituting the given values into the formula, we get: new number = 250 + (250 * 250 / 100).

Step 4 ：Solving the equation, we find that the new number is 875.

Step 5 ：\(\boxed{875}\) is the new number produced when the original number 250 is increased by 250%.