12.12% is the change from 520 to 583
Calculation steps:
[( 583 - 520 ) ÷ 520] x 100 = 12.12%
Formula
Percentage change = [(583 - 520) / 520] x 100
Subtract the new number by the original number
583 - 520 = 63
63 ÷ 520 = 0.12115384615384615
0.12115384615384615 x 100 = 12.12%