41.07% is the change from 638 to 900
Calculation steps:
[( 900 - 638 ) ÷ 638] x 100 = 41.07%
Formula
Percentage change = [(900 - 638) / 638] x 100
Subtract the new number by the original number
900 - 638 = 262
262 ÷ 638 = 0.4106583072100313
0.4106583072100313 x 100 = 41.07%