91.48% is the change from 305 to 584
Calculation steps:
[( 584 - 305 ) ÷ 305] x 100 = 91.48%
Formula
Percentage change = [(584 - 305) / 305] x 100
Subtract the new number by the original number
584 - 305 = 279
279 ÷ 305 = 0.9147540983606557
0.9147540983606557 x 100 = 91.48%