125.64% is the change from 390 to 880
Calculation steps:
[( 880 - 390 ) ÷ 390] x 100 = 125.64%
Formula
Percentage change = [(880 - 390) / 390] x 100
Subtract the new number by the original number
880 - 390 = 490
490 ÷ 390 = 1.2564102564102564
1.2564102564102564 x 100 = 125.64%