166.06% is the change from 109 to 290
Calculation steps:
[( 290 - 109 ) ÷ 109] x 100 = 166.06%
Formula
Percentage change = [(290 - 109) / 109] x 100
Subtract the new number by the original number
290 - 109 = 181
181 ÷ 109 = 1.6605504587155964
1.6605504587155964 x 100 = 166.06%