I swap bnb to myth... i swap 0.24 bnb but i recieved only 57.2158 MYTH.. last time i exchange 0.012817 bnb to myth 47.9209... may i know why it become less and have a big difference

[SwaK]

0xaeb8c77aec93f839dcecf7b7276ff8f707cd57f646f75b77fc44f190c53a14d5

0xca5fdab685888cf0c6b2d02bb66c885bd07f93aef54b20fc1a9d660da1447651