How is coal consumption changing in absolute term? What matter most is the absolute amount of fossiel fuel being burned, and the amount of greenhouse gases released.
Developing renewable is great. But the article focus on share and relative figures. So it's not clear if renewable are increasing faster than coal, and emissions continue to rise. Or if coal use is actually decreasing.
Update: Sadly India keep increasing coal use according to this source. So it's too early to celebrate.