306.86% is the change from 102 to 415
Calculation steps:
[( 415 - 102 ) ÷ 102] x 100 = 306.86%
Formula
Percentage change = [(415 - 102) / 102] x 100
Subtract the new number by the original number
415 - 102 = 313
313 ÷ 102 = 3.0686274509803924
3.0686274509803924 x 100 = 306.86%