2033.33% is the change from 12 to 256
Calculation steps:
[( 256 - 12 ) ÷ 12] x 100 = 2033.33%
Formula
Percentage change = [(256 - 12) / 12] x 100
Subtract the new number by the original number
256 - 12 = 244
244 ÷ 12 = 20.333333333333332
20.333333333333332 x 100 = 2033.33%