1869.23% is the change from 13 to 256
Calculation steps:
[( 256 - 13 ) ÷ 13] x 100 = 1869.23%
Formula
Percentage change = [(256 - 13) / 13] x 100
Subtract the new number by the original number
256 - 13 = 243
243 ÷ 13 = 18.692307692307693
18.692307692307693 x 100 = 1869.23%