79.23% is the change from 390 to 699
Calculation steps:
[( 699 - 390 ) ÷ 390] x 100 = 79.23%
Formula
Percentage change = [(699 - 390) / 390] x 100
Subtract the new number by the original number
699 - 390 = 309
309 ÷ 390 = 0.7923076923076923
0.7923076923076923 x 100 = 79.23%