Very little (if at all). The change would be so small, that it would hardly be noticeable at present.
If you were to look at Bitcoin's adoption as a Remittance conduct versus Western Union's growth, I think it is safe to assume that (at present) WU far surpasses the little share that Bitcoin is attempting to eat.
See also: How will Bitcoin change Remittance? Will it?
If you were to look at Bitcoin's adoption as a Remittance conduct versus Western Union's growth, I think it is safe to assume that (at present) WU far surpasses the little share that Bitcoin is attempting to eat.
See also: How will Bitcoin change Remittance? Will it?