23900% is the change from 1 to 240
Calculation steps:
[( 240 - 1 ) ÷ 1] x 100 = 23900%
Formula
Percentage change = [(240 - 1) / 1] x 100
Subtract the new number by the original number
240 - 1 = 239
239 ÷ 1 = 239
239 x 100 = 23900%
Example