18.87% is the change from 530 to 630
Calculation steps:
[( 630 - 530 ) ÷ 530] x 100 = 18.87%
Formula
Percentage change = [(630 - 530) / 530] x 100
Subtract the new number by the original number
630 - 530 = 100
100 ÷ 530 = 0.18867924528301888
0.18867924528301888 x 100 = 18.87%