Dear Nalini ji ,
The base of the stipe is quite visible in the photo and its doesn’t show the characteristic bulbous nature which is a diagnostic character of Chlorophyllum rhacodes [or "Lepiota rhacodes" or "Macrolepiota rhacodes" in the past] another very important point to consider is the colour of the stipe in C rhacodes the stipe is completely white in colour and in Macrolepiota procera it is brown, the mushroom in the photo shown a brown colouration of the stipe. The stipe is much thicker in case of C rhacodes (2-3.5 cm) in contrast to M procera (0.5-1.5 cm).
The scales on the cap in C rhacodes are much larger in size and nearly cover up the complete upper surface where as in M procera it is restricted to the central region of the cap mainly the marginal portions have scales which are tiny in size. A prominent central bump is visible in M procera absent in the other one.
The moveable ring is visible in both the species hence cant be considered as a diagnostic character at all, but in C rhacodes the rig is much bigger in size.
Hope this few points will help to discriminate between this two species.
Hence this mushroom is Macrolepiota procera for me as it supports the character.