The price of an article was increased two times successively by 20%. By what percent should the new price be reduced so as to restore the original price?

30.56%

20% = \(\frac{1}{5}\)

 Let number = 100

After increasing by 10% successively, the number = 100 × \(\frac{6}{5}\) × \(\frac{6}{5}\) = 144

To restore number should be decreased by = 144 - 100 = 44

Decreasing percentage = \(\frac{44}{144}\)× 100 = 30.56%