88.61% is the change from 439 to 828
Calculation steps:
[( 828 - 439 ) ÷ 439] x 100 = 88.61%
Formula
Percentage change = [(828 - 439) / 439] x 100
Subtract the new number by the original number
828 - 439 = 389
389 ÷ 439 = 0.8861047835990888
0.8861047835990888 x 100 = 88.61%