289.74% is the change from 78 to 304
Calculation steps:
[( 304 - 78 ) ÷ 78] x 100 = 289.74%
Formula
Percentage change = [(304 - 78) / 78] x 100
Subtract the new number by the original number
304 - 78 = 226
226 ÷ 78 = 2.8974358974358974
2.8974358974358974 x 100 = 289.74%