81.16% is the change from 398 to 721
Calculation steps:
[( 721 - 398 ) ÷ 398] x 100 = 81.16%
Formula
Percentage change = [(721 - 398) / 398] x 100
Subtract the new number by the original number
721 - 398 = 323
323 ÷ 398 = 0.8115577889447236
0.8115577889447236 x 100 = 81.16%