30.87% is the change from 664 to 869
Calculation steps:
[( 869 - 664 ) ÷ 664] x 100 = 30.87%
Formula
Percentage change = [(869 - 664) / 664] x 100
Subtract the new number by the original number
869 - 664 = 205
205 ÷ 664 = 0.30873493975903615
0.30873493975903615 x 100 = 30.87%