77.2% is the change from 421 to 746
Calculation steps:
[( 746 - 421 ) ÷ 421] x 100 = 77.2%
Formula
Percentage change = [(746 - 421) / 421] x 100
Subtract the new number by the original number
746 - 421 = 325
325 ÷ 421 = 0.7719714964370546
0.7719714964370546 x 100 = 77.2%