155.56% is the change from 9 to 23
Calculation steps:
[( 23 - 9 ) ÷ 9] x 100 = 155.56%
Formula
Percentage change = [(23 - 9) / 9] x 100
Subtract the new number by the original number
23 - 9 = 14
14 ÷ 9 = 1.5555555555555556
1.5555555555555556 x 100 = 155.56%