The total raised in income tax (according to direct.gov) is £146 billion. So this reduction in the planned increase is going to make a drop of less than 0.5% of income tax revenue (and income tax is only about a quarter of Govt revenue).
So in terms of total budget, it actually isn't that big. It may be symbolically important (if you do well, we'll tax you until it hurts), but let's not fall into the trap of thinking that this measure - yielding as pointed out by a poster above about £0.75b - is enough to 'save' EMA or SureStart.
I'm not trying pro or anti this sort of cut (don't know enough about the well-documented unintended consequences). I am trying to point out it is a drop in the ocean. As even with current cuts, we are still borrowing at record levels.