427.74% is the change from 155 to 818
Calculation steps:
[( 818 - 155 ) ÷ 155] x 100 = 427.74%
Formula
Percentage change = [(818 - 155) / 155] x 100
Subtract the new number by the original number
818 - 155 = 663
663 ÷ 155 = 4.27741935483871
4.27741935483871 x 100 = 427.74%