3800% is the change from 1 to 39
Calculation steps:
[( 39 - 1 ) ÷ 1] x 100 = 3800%
Formula
Percentage change = [(39 - 1) / 1] x 100
Subtract the new number by the original number
39 - 1 = 38
38 ÷ 1 = 38
38 x 100 = 3800%
Example