310.81% is the change from 74 to 304
Calculation steps:
[( 304 - 74 ) ÷ 74] x 100 = 310.81%
Formula
Percentage change = [(304 - 74) / 74] x 100
Subtract the new number by the original number
304 - 74 = 230
230 ÷ 74 = 3.108108108108108
3.108108108108108 x 100 = 310.81%