71.5% is the change from 428 to 734
Calculation steps:
[( 734 - 428 ) ÷ 428] x 100 = 71.5%
Formula
Percentage change = [(734 - 428) / 428] x 100
Subtract the new number by the original number
734 - 428 = 306
306 ÷ 428 = 0.7149532710280374
0.7149532710280374 x 100 = 71.5%