Why would the clergy and nobility to reform the country

In the fall of 1786, Louis XVI’s controller general, Charles Alexandre de Calonne, proposed a financial reform package that included a universal land tax from which the privileged classes would no longer be exempt.

To garner support for these measures and forestall a growing aristocratic revolt, the king summoned the Estates-General (les états généraux) – an assembly representing France’s clergy, nobility and middle class – for the first time since 1614.

Basically the people were revolting and so the king needed to fight back