29.67% is the change from 664 to 861
Calculation steps:
[( 861 - 664 ) ÷ 664] x 100 = 29.67%
Formula
Percentage change = [(861 - 664) / 664] x 100
Subtract the new number by the original number
861 - 664 = 197
197 ÷ 664 = 0.29668674698795183
0.29668674698795183 x 100 = 29.67%