29.28% is the change from 304 to 393
Calculation steps:
[( 393 - 304 ) ÷ 304] x 100 = 29.28%
Formula
Percentage change = [(393 - 304) / 304] x 100
Subtract the new number by the original number
393 - 304 = 89
89 ÷ 304 = 0.29276315789473684
0.29276315789473684 x 100 = 29.28%