40.53% is the change from 639 to 898
Calculation steps:
[( 898 - 639 ) ÷ 639] x 100 = 40.53%
Formula
Percentage change = [(898 - 639) / 639] x 100
Subtract the new number by the original number
898 - 639 = 259
259 ÷ 639 = 0.405320813771518
0.405320813771518 x 100 = 40.53%