40.56% is the change from 646 to 908
Calculation steps:
[( 908 - 646 ) ÷ 646] x 100 = 40.56%
Formula
Percentage change = [(908 - 646) / 646] x 100
Subtract the new number by the original number
908 - 646 = 262
262 ÷ 646 = 0.4055727554179567
0.4055727554179567 x 100 = 40.56%