156.29% is the change from 318 to 815
Calculation steps:
[( 815 - 318 ) ÷ 318] x 100 = 156.29%
Formula
Percentage change = [(815 - 318) / 318] x 100
Subtract the new number by the original number
815 - 318 = 497
497 ÷ 318 = 1.5628930817610063
1.5628930817610063 x 100 = 156.29%