75.64% is the change from 390 to 685
Calculation steps:
[( 685 - 390 ) ÷ 390] x 100 = 75.64%
Formula
Percentage change = [(685 - 390) / 390] x 100
Subtract the new number by the original number
685 - 390 = 295
295 ÷ 390 = 0.7564102564102564
0.7564102564102564 x 100 = 75.64%