211.93% is the change from 109 to 340
Calculation steps:
[( 340 - 109 ) ÷ 109] x 100 = 211.93%
Formula
Percentage change = [(340 - 109) / 109] x 100
Subtract the new number by the original number
340 - 109 = 231
231 ÷ 109 = 2.1192660550458715
2.1192660550458715 x 100 = 211.93%