The lesson
Title the piece with the sceptic's question, then make the chart headline the answer, so the reader gets the verdict at a glance.
The page title is "Was the global decline of extreme poverty only due to China?" and the chart headline answers it, opening "Extreme poverty fell sharply worldwide" and adding that this holds even excluding China. Two lines are labelled directly on the chart: "Global extreme poverty fell from 43% to 10%" and "If we exclude China, it still fell from 33% to 12%". A data source line sits under the chart.
Don't copy the topic or the two-line comparison unless you have a real counter-case to test. Keep the question-as-title, answer-as-headline pairing and the direct labels.