155.63% is the change from 320 to 818
Calculation steps:
[( 818 - 320 ) ÷ 320] x 100 = 155.63%
Formula
Percentage change = [(818 - 320) / 320] x 100
Subtract the new number by the original number
818 - 320 = 498
498 ÷ 320 = 1.55625
1.55625 x 100 = 155.63%