21.36% is the change from 529 to 642
Calculation steps:
[( 642 - 529 ) ÷ 529] x 100 = 21.36%
Formula
Percentage change = [(642 - 529) / 529] x 100
Subtract the new number by the original number
642 - 529 = 113
113 ÷ 529 = 0.21361058601134217
0.21361058601134217 x 100 = 21.36%