30.57% is the change from 664 to 867
Calculation steps:
[( 867 - 664 ) ÷ 664] x 100 = 30.57%
Formula
Percentage change = [(867 - 664) / 664] x 100
Subtract the new number by the original number
867 - 664 = 203
203 ÷ 664 = 0.3057228915662651
0.3057228915662651 x 100 = 30.57%