If you actually amended your return, the difference will show on Form 1040X line 20 (if you owe) or 21 (if a refund).
If you only changed your return in order to send Form 8962 and page 2 of your 1040 to the IRS, the difference will be on Form 8962 line 26 if you are getting a refund, or line 29 if you owe.