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Here's a hint. It depends on which ton you are referring to as there are more than one conversions available.

1 short ton (used in the US) = 2,000 lb

1 long ton (used in UK) = 2,240 lb

1 metric ton (or tonne, International System of Units) = 1,000 kg (approx. 2,204.6 lb)

To get the answer:
a. Convert lb to ton
b. Multiply by 100%
2 4 2
So is it .8?
If you used the short ton conversion, yes.