For its fiscal second quarter, Apple is expected to report $1.43 in earnings per share on $92.97 billion in sales, a 4.4% decline year over year, according to Refinitiv consensus estimates. Kif Leswing for CNBC: When Apple reports quarterly earnings on Thursday, the results are expected to be somewhat muted — the company already guided investors to a 5% revenue decline due largely to decreases in Mac and iPad sales. But Apple will still remind investors of its mammoth size and market power, as the company uses its fiscal second-quarter report to tell investors how much the board has authorized it to spend on share buybacks and dividends. Wall Street expects that number to come in at $90 billion, equal…