20.98% is the change from 529 to 640
Calculation steps:
[( 640 - 529 ) ÷ 529] x 100 = 20.98%
Formula
Percentage change = [(640 - 529) / 529] x 100
Subtract the new number by the original number
640 - 529 = 111
111 ÷ 529 = 0.20982986767485823
0.20982986767485823 x 100 = 20.98%