The bank had reported a post-tax profit of Rs 316 crore in the year to March 2016 and Rs 710 crore in fiscal 2015.
The bank did not offer any reason for the steep fall in net income.
The export finance institution's transfer of profit to the government also declined to a trickle at Rs 4 crore in fiscal 2017 from Rs 32 crore in 2015-16 and Rs 433 crore in 2014-15, according to a note on its official website.
It received Rs 500 crore as capital from the government in 2016-17.
The bank raised Rs 21,604 crore as rupee borrowing and Rs 18,800 crore as forex borrowing in the year. It extended 15 lines of credit amounting to USD 2.27 billion to various countries in the year.
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