Nearly a tie: Greenland and India differ by barely -32%% in area — about 2,154,754 km² km² against 3,155,807 km² km².
Greenland sits in North America, India in Asia. On the old Mercator map the latitude gap distorted how large each felt beside the other; at true size the answer is simply 0.7×.
The old map muddied it further: Mercator inflates Greenland about 11.8× and India about 1.2×, so on a Mercator-style map this pair appears 6.8× apart instead of the true 0.7×.
India fits 0× into Greenland.