81.45% is the change from 399 to 724
Calculation steps:
[( 724 - 399 ) ÷ 399] x 100 = 81.45%
Formula
Percentage change = [(724 - 399) / 399] x 100
Subtract the new number by the original number
724 - 399 = 325
325 ÷ 399 = 0.8145363408521303
0.8145363408521303 x 100 = 81.45%