77.19% is the change from 399 to 707
Calculation steps:
[( 707 - 399 ) ÷ 399] x 100 = 77.19%
Formula
Percentage change = [(707 - 399) / 399] x 100
Subtract the new number by the original number
707 - 399 = 308
308 ÷ 399 = 0.7719298245614035
0.7719298245614035 x 100 = 77.19%