20.63% is the change from 664 to 801
Calculation steps:
[( 801 - 664 ) ÷ 664] x 100 = 20.63%
Formula
Percentage change = [(801 - 664) / 664] x 100
Subtract the new number by the original number
801 - 664 = 137
137 ÷ 664 = 0.2063253012048193
0.2063253012048193 x 100 = 20.63%