75.77% is the change from 421 to 740
Calculation steps:
[( 740 - 421 ) ÷ 421] x 100 = 75.77%
Formula
Percentage change = [(740 - 421) / 421] x 100
Subtract the new number by the original number
740 - 421 = 319
319 ÷ 421 = 0.7577197149643705
0.7577197149643705 x 100 = 75.77%