334.93% is the change from 209 to 909
Calculation steps:
[( 909 - 209 ) ÷ 209] x 100 = 334.93%
Formula
Percentage change = [(909 - 209) / 209] x 100
Subtract the new number by the original number
909 - 209 = 700
700 ÷ 209 = 3.349282296650718
3.349282296650718 x 100 = 334.93%