This is a simple issue. Inflation and indexes like RPI work as %. The issue with % is that the absolute numbers are ignored in the reality of our day to day lives. If you are a multi-millionaire and get a 0.2% rise in income that is an amount that means you can buy a new car every month instead of every other month.
If you are on minimum wage a 0.2% increase won't even amount to a postage stamp.
So growth rates and inflation may well be looked at by economists to make important decisions but the impacts on the poor are disproportional. 2% growth is great but 2% of nothing is still nothing.
