3900% is the change from 6 to 240
Calculation steps:
[( 240 - 6 ) ÷ 6] x 100 = 3900%
Formula
Percentage change = [(240 - 6) / 6] x 100
Subtract the new number by the original number
240 - 6 = 234
234 ÷ 6 = 39
39 x 100 = 3900%
Example