27.11% is the change from 664 to 844
Calculation steps:
[( 844 - 664 ) ÷ 664] x 100 = 27.11%
Formula
Percentage change = [(844 - 664) / 664] x 100
Subtract the new number by the original number
844 - 664 = 180
180 ÷ 664 = 0.2710843373493976
0.2710843373493976 x 100 = 27.11%