19.81% is the change from 520 to 623
Calculation steps:
[( 623 - 520 ) ÷ 520] x 100 = 19.81%
Formula
Percentage change = [(623 - 520) / 520] x 100
Subtract the new number by the original number
623 - 520 = 103
103 ÷ 520 = 0.19807692307692307
0.19807692307692307 x 100 = 19.81%