44.61% is the change from 399 to 577
Calculation steps:
[( 577 - 399 ) ÷ 399] x 100 = 44.61%
Formula
Percentage change = [(577 - 399) / 399] x 100
Subtract the new number by the original number
577 - 399 = 178
178 ÷ 399 = 0.44611528822055135
0.44611528822055135 x 100 = 44.61%