Why is the annual transferred money worldwide quite different? The source below says 
"According to this document from the US Treasury, SWIFT handles about \$5 trillion per day, or given about 250 business days per year, about \$1.25 quadrillion dollars a year.".
How much money is wire transferred every year worldwide?

However this source below says 
"Worldwide, 230 million people send \$500 billion in remittances each year".
https://qz.com/775159/theres-a-500-billion-remittance-market-and-bitcoin-startups-want-in-on-it/

Why is the annual transferred money worldwide quite different?
Could you tell me the correct figure?
There is no contradiction here as not every transfer is a remittance.


  remit 
  late Middle English: from Latin remittere ‘send back, restore’


It is my understanding that the word remittance is usually used to describe transfers by foreign workers to their home countries. From Wikipedia:


  A remittance is a transfer of money by a foreign worker to an individual in his or her home country.


These transfers may be conducted via SWIFT. As such they make up a small part of all SWIFT traffic, which would also include domestic payments, international business transfers, etc. So it is quite possible that the yearly volume of remittances is $\$5 \cdot 10^{11} $ whereas the yearly volume of SWIFT transfers is $\$1.25 \cdot 10^{15} $.