In the last 5 years, world emissions of carbon dioxide have increased by 3.5 gigatons. China's increase has been 80% of this; India's 15%.
In just the last 3 years, China's increase has been 98% of the world's increase. India, 15%.
(But, to be clear, the US emits far more, per capita, than either country: 3.2 times China, and 12.6 times more than India .)