Hi dear,
Yes you can definitely appear in bank PO exam as there is no restrictions in board percentage. Your age should be 21 to 30 and you should be graduated or final year of graduation. You can check eligibility for SBI PO here
https://www.google.co.in/url?q=https://competition.careers360.com/articles/sbi-po-eligibility-criteria&sa=U&ved=2ahUKEwjooq3yy9vnAhVN63MBHdD8DNg4ChAWMAV6BAgFEAE&usg=AOvVaw3DMFmmuLKy3hb5sPOJZlef
Hope it helps.
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