338.1% is the change from 210 to 920
Calculation steps:
[( 920 - 210 ) ÷ 210] x 100 = 338.1%
Formula
Percentage change = [(920 - 210) / 210] x 100
Subtract the new number by the original number
920 - 210 = 710
710 ÷ 210 = 3.380952380952381
3.380952380952381 x 100 = 338.1%