Read the following text carefully and compare the impact of subsequent reforms initiated by China and India.
China underwent substantial policy changes to stimulate their economy. China's economic growth was rapid in the late 1970s across various sectors. However, India had to wait much longer for its economic transformation. India's significant economic progress was only realised after the economic reforms of 1991, which were implemented out of compulsion.
On the basis of given text and common understanding, compare the impact of subsequent reforms initiated by China and India.