One a Telegraph slide show at the top we get:
Value of money slides 30pc in 30 years as cost of goods rockets
And in the caption, on the same page, we get:
The value of money has plummeted by 67pc over the last 30 years as the cost of everyday goods has rocketed, research has found. According to a study by Lloyds TSB Private Banking, a three-fold increase in retail prices means that someone would need £299 today to have the equivalent purchasing power of £100 back in 1982. Its analysis of official and commercial figures found that a loaf of bread has increased more than three-fold in the last three decades, from 37p in 1982 to £1.24 by 2012, while the price of a pint of milk has increased at a slower rate, doubling from 20p 30 years ago to 46p.
A decline of 30% is different from a decline of 67%. A decline to 30% is very similar to a decline of 67% though.
And the really important point?
If you want to compare the value of a £100.00 Commodity in 1982 there are three choices. In 2011 the relative:
real price of that commodity is £288.60
labour value of that commodity is £429.10
income value of that commodity is £478.30
If you want to compare the value of a £100.00 Income or Wealth , in 1982 there are three choices. In 2011 the relative:
historic standard of living value of that income or wealth is £288.60
economic status value of that income or wealth is £478.30
economic power value of that income or wealth is £536.50
Real wages are substantially up over the time period.