7.94% is the change from 592 to 639
Calculation steps:
[( 639 - 592 ) ÷ 592] x 100 = 7.94%
Formula
Percentage change = [(639 - 592) / 592] x 100
Subtract the new number by the original number
639 - 592 = 47
47 ÷ 592 = 0.07939189189189189
0.07939189189189189 x 100 = 7.94%