15.28% is the change from 530 to 611
Calculation steps:
[( 611 - 530 ) ÷ 530] x 100 = 15.28%
Formula
Percentage change = [(611 - 530) / 530] x 100
Subtract the new number by the original number
611 - 530 = 81
81 ÷ 530 = 0.15283018867924528
0.15283018867924528 x 100 = 15.28%