15450% is the change from 2 to 311
Calculation steps:
[( 311 - 2 ) ÷ 2] x 100 = 15450%
Formula
Percentage change = [(311 - 2) / 2] x 100
Subtract the new number by the original number
311 - 2 = 309
309 ÷ 2 = 154.5
154.5 x 100 = 15450%
Example