391.18% is the change from 102 to 501
Calculation steps:
[( 501 - 102 ) ÷ 102] x 100 = 391.18%
Formula
Percentage change = [(501 - 102) / 102] x 100
Subtract the new number by the original number
501 - 102 = 399
399 ÷ 102 = 3.911764705882353
3.911764705882353 x 100 = 391.18%