39.12% is the change from 639 to 889
Calculation steps:
[( 889 - 639 ) ÷ 639] x 100 = 39.12%
Formula
Percentage change = [(889 - 639) / 639] x 100
Subtract the new number by the original number
889 - 639 = 250
250 ÷ 639 = 0.39123630672926446
0.39123630672926446 x 100 = 39.12%