168.42% is the change from 304 to 816
Calculation steps:
[( 816 - 304 ) ÷ 304] x 100 = 168.42%
Formula
Percentage change = [(816 - 304) / 304] x 100
Subtract the new number by the original number
816 - 304 = 512
512 ÷ 304 = 1.6842105263157894
1.6842105263157894 x 100 = 168.42%