47.95% is the change from 390 to 577
Calculation steps:
[( 577 - 390 ) ÷ 390] x 100 = 47.95%
Formula
Percentage change = [(577 - 390) / 390] x 100
Subtract the new number by the original number
577 - 390 = 187
187 ÷ 390 = 0.4794871794871795
0.4794871794871795 x 100 = 47.95%