76.48% is the change from 421 to 743
Calculation steps:
[( 743 - 421 ) ÷ 421] x 100 = 76.48%
Formula
Percentage change = [(743 - 421) / 421] x 100
Subtract the new number by the original number
743 - 421 = 322
322 ÷ 421 = 0.7648456057007126
0.7648456057007126 x 100 = 76.48%