3733.33% is the change from 9 to 345
Calculation steps:
[( 345 - 9 ) ÷ 9] x 100 = 3733.33%
Formula
Percentage change = [(345 - 9) / 9] x 100
Subtract the new number by the original number
345 - 9 = 336
336 ÷ 9 = 37.333333333333336
37.333333333333336 x 100 = 3733.33%