8.32% is the change from 613 to 664
Calculation steps:
[( 664 - 613 ) ÷ 613] x 100 = 8.32%
Formula
Percentage change = [(664 - 613) / 613] x 100
Subtract the new number by the original number
664 - 613 = 51
51 ÷ 613 = 0.08319738988580751
0.08319738988580751 x 100 = 8.32%