87.22% is the change from 399 to 747
Calculation steps:
[( 747 - 399 ) ÷ 399] x 100 = 87.22%
Formula
Percentage change = [(747 - 399) / 399] x 100
Subtract the new number by the original number
747 - 399 = 348
348 ÷ 399 = 0.8721804511278195
0.8721804511278195 x 100 = 87.22%