6300% is the change from 2 to 128
Calculation steps:
[( 128 - 2 ) ÷ 2] x 100 = 6300%
Formula
Percentage change = [(128 - 2) / 2] x 100
Subtract the new number by the original number
128 - 2 = 126
126 ÷ 2 = 63
63 x 100 = 6300%
Example