1400% is the change from 23 to 345
Calculation steps:
[( 345 - 23 ) ÷ 23] x 100 = 1400%
Formula
Percentage change = [(345 - 23) / 23] x 100
Subtract the new number by the original number
345 - 23 = 322
322 ÷ 23 = 14
14 x 100 = 1400%
Example