How accurate were these predictions?

[Richard Hargreaves]

According to a document I found in RM7/990 [General Staff of the Army Org.Abt., June 12th 1942] OKH estimated likely losses for the 1942-43 campaign as follows:

June 1st-November 30th 1942: Losses - 750,000; Replacements - 800,000; Shortfall - 690,000

December 1st 1942-May 31st 1943: Losses - 620,000; Replacements - 360,000 (plus 260,000 from the 1924 year group); Shortfall - 690,000

Losses assume that during the summer of 1942 they will be around 20 per cent lower than in the summer of 1941; and 33 per cent lower in the winter of 1942-43 than over the winter of 1941-42

How far close to/off the mark were they?