6850% is the change from 2 to 139
Calculation steps:
[( 139 - 2 ) ÷ 2] x 100 = 6850%
Formula
Percentage change = [(139 - 2) / 2] x 100
Subtract the new number by the original number
139 - 2 = 137
137 ÷ 2 = 68.5
68.5 x 100 = 6850%
Example