Answer:
£8 889
Explanation:
If a man earns 900% more than his original wage, it implies that the percentage of his original wage is 100% such that he earned 9 times his original wage. Thus 900/100 = 9
Therefore, his original wage is:

The man's original wage is £8 889
Check
£8 889 × 9 = £80 001, approximately £80 000.