298.04% is the change from 102 to 406
Calculation steps:
[( 406 - 102 ) ÷ 102] x 100 = 298.04%
Formula
Percentage change = [(406 - 102) / 102] x 100
Subtract the new number by the original number
406 - 102 = 304
304 ÷ 102 = 2.980392156862745
2.980392156862745 x 100 = 298.04%