145.1% is the change from 306 to 750
Calculation steps:
[( 750 - 306 ) ÷ 306] x 100 = 145.1%
Formula
Percentage change = [(750 - 306) / 306] x 100
Subtract the new number by the original number
750 - 306 = 444
444 ÷ 306 = 1.4509803921568627
1.4509803921568627 x 100 = 145.1%