40.81% is the change from 664 to 935
Calculation steps:
[( 935 - 664 ) ÷ 664] x 100 = 40.81%
Formula
Percentage change = [(935 - 664) / 664] x 100
Subtract the new number by the original number
935 - 664 = 271
271 ÷ 664 = 0.40813253012048195
0.40813253012048195 x 100 = 40.81%