"...but elephants require in excess of 1.5% of their body-weight in food per day. Estimates for the dietary requirements of the Asian elephant can range from 135 to 300kg per day in a mix of grazing and fodder..."

It should be pounds, not Kg. "Elephants eat roots, grasses, fruit, and bark, and they eat a lot of these things. An adult elephant can consume up to 300 pounds of food in a single day"

From: https://www.nationalgeographic.com/animals/mammals/a/african....