34400% is the change from 1 to 345
Calculation steps:
[( 345 - 1 ) ÷ 1] x 100 = 34400%
Formula
Percentage change = [(345 - 1) / 1] x 100
Subtract the new number by the original number
345 - 1 = 344
344 ÷ 1 = 344
344 x 100 = 34400%
Example