2.12% is the change from 520 to 531
Calculation steps:
[( 531 - 520 ) ÷ 520] x 100 = 2.12%
Formula
Percentage change = [(531 - 520) / 520] x 100
Subtract the new number by the original number
531 - 520 = 11
11 ÷ 520 = 0.021153846153846155
0.021153846153846155 x 100 = 2.12%