40.41% is the change from 641 to 900
Calculation steps:
[( 900 - 641 ) ÷ 641] x 100 = 40.41%
Formula
Percentage change = [(900 - 641) / 641] x 100
Subtract the new number by the original number
900 - 641 = 259
259 ÷ 641 = 0.4040561622464899
0.4040561622464899 x 100 = 40.41%