It is not possible to give a definitive answer.
This is because the amount of formula grant for any authority is based on a calculation that, as well as including the relative needs formulae (i.e. the socio-economic and demographic characteristics of the authority) also includes a floors damping mechanism that ensures that every authority receives at least a certain percentage increase (the “floor”). In order to pay for the cost of the floor we scale back authorities' formula grant increase above the floor.
It is possible that, had the Government not decided to phase in the introduction of the new relative needs formulae for children's social care and social services for younger adults, we might have chosen to set different grant floor levels.