The percentage increase needed is based on the reduced price, not the original.

• Let original price = 100
• After 25% reduction: 100 − 25 = 75
• Increase needed = 25
• Percentage increase on reduced price = \(\frac{25}{75} \times 100\% = 33\frac{1}{3}\%\)

Final Answer: \(33\frac{1}{3}\%\)