161.01% is the change from 318 to 830
Calculation steps:
[( 830 - 318 ) ÷ 318] x 100 = 161.01%
Formula
Percentage change = [(830 - 318) / 318] x 100
Subtract the new number by the original number
830 - 318 = 512
512 ÷ 318 = 1.610062893081761
1.610062893081761 x 100 = 161.01%