319.61% is the change from 102 to 428
Calculation steps:
[( 428 - 102 ) ÷ 102] x 100 = 319.61%
Formula
Percentage change = [(428 - 102) / 102] x 100
Subtract the new number by the original number
428 - 102 = 326
326 ÷ 102 = 3.196078431372549
3.196078431372549 x 100 = 319.61%