90.66% is the change from 439 to 837
Calculation steps:
[( 837 - 439 ) ÷ 439] x 100 = 90.66%
Formula
Percentage change = [(837 - 439) / 439] x 100
Subtract the new number by the original number
837 - 439 = 398
398 ÷ 439 = 0.9066059225512528
0.9066059225512528 x 100 = 90.66%