21.08% is the change from 664 to 804
Calculation steps:
[( 804 - 664 ) ÷ 664] x 100 = 21.08%
Formula
Percentage change = [(804 - 664) / 664] x 100
Subtract the new number by the original number
804 - 664 = 140
140 ÷ 664 = 0.21084337349397592
0.21084337349397592 x 100 = 21.08%