28.16% is the change from 664 to 851
Calculation steps:
[( 851 - 664 ) ÷ 664] x 100 = 28.16%
Formula
Percentage change = [(851 - 664) / 664] x 100
Subtract the new number by the original number
851 - 664 = 187
187 ÷ 664 = 0.2816265060240964
0.2816265060240964 x 100 = 28.16%