3850% is the change from 2 to 79
Calculation steps:
[( 79 - 2 ) ÷ 2] x 100 = 3850%
Formula
Percentage change = [(79 - 2) / 2] x 100
Subtract the new number by the original number
79 - 2 = 77
77 ÷ 2 = 38.5
38.5 x 100 = 3850%
Example