21.54% is the change from 664 to 807
Calculation steps:
[( 807 - 664 ) ÷ 664] x 100 = 21.54%
Formula
Percentage change = [(807 - 664) / 664] x 100
Subtract the new number by the original number
807 - 664 = 143
143 ÷ 664 = 0.21536144578313254
0.21536144578313254 x 100 = 21.54%