428.39% is the change from 155 to 819
Calculation steps:
[( 819 - 155 ) ÷ 155] x 100 = 428.39%
Formula
Percentage change = [(819 - 155) / 155] x 100
Subtract the new number by the original number
819 - 155 = 664
664 ÷ 155 = 4.283870967741936
4.283870967741936 x 100 = 428.39%