26.36% is the change from 664 to 839
Calculation steps:
[( 839 - 664 ) ÷ 664] x 100 = 26.36%
Formula
Percentage change = [(839 - 664) / 664] x 100
Subtract the new number by the original number
839 - 664 = 175
175 ÷ 664 = 0.2635542168674699
0.2635542168674699 x 100 = 26.36%