Text: This drop in payment mail volume accounts for 69 percent of the decline in the volume of HH-to-NHH sector, amounted to 3.6 billion pieces between 1990 and 1997 (see Table 1).
Entailment: This drop in payment mail volume amounted to 3.6 billion pieces.
Contradiction: This drop in payment mail volume accounts for 4 percent of the decline in the volume.