2558.33% is the change from 12 to 319
Calculation steps:
[( 319 - 12 ) ÷ 12] x 100 = 2558.33%
Formula
Percentage change = [(319 - 12) / 12] x 100
Subtract the new number by the original number
319 - 12 = 307
307 ÷ 12 = 25.583333333333332
25.583333333333332 x 100 = 2558.33%