39.59% is the change from 639 to 892
Calculation steps:
[( 892 - 639 ) ÷ 639] x 100 = 39.59%
Formula
Percentage change = [(892 - 639) / 639] x 100
Subtract the new number by the original number
892 - 639 = 253
253 ÷ 639 = 0.39593114241001565
0.39593114241001565 x 100 = 39.59%