74.35% is the change from 421 to 734
Calculation steps:
[( 734 - 421 ) ÷ 421] x 100 = 74.35%
Formula
Percentage change = [(734 - 421) / 421] x 100
Subtract the new number by the original number
734 - 421 = 313
313 ÷ 421 = 0.7434679334916865
0.7434679334916865 x 100 = 74.35%