Google has suffered its first recorded revenue decline, as the coronavirus crisis wiped 8 percent from advertising income in the latest quarter and depressed parent company Alphabet’s revenues by 2 percent from the year before.

Despite the unprecedented fall-off in its core business, however, Google executives said conditions had improved as the quarter progressed, and offered cautious optimism for a return to growth in the current period.

Sundar Pichai, chief executive, said Google had seen “the early signs of stabilization, as users returned to commercial activity online.”