What was the precise decadal population growth rate recorded in West Bengal during the demographic crisis decade of $1911\text{–}1921$?

The decade of $1911\text{–}1921$ is marked as a period of negative or stagnant growth in Indian demographic history due to widespread famines, droughts, and the global influenza epidemic of $1918$. West Bengal recorded a negative decadal growth rate of **$-2.91\%$ **.