8.51% is the change from 611 to 663
Calculation steps:
[( 663 - 611 ) ÷ 611] x 100 = 8.51%
Formula
Percentage change = [(663 - 611) / 611] x 100
Subtract the new number by the original number
663 - 611 = 52
52 ÷ 611 = 0.0851063829787234
0.0851063829787234 x 100 = 8.51%