9.08% is the change from 606 to 661
Calculation steps:
[( 661 - 606 ) ÷ 606] x 100 = 9.08%
Formula
Percentage change = [(661 - 606) / 606] x 100
Subtract the new number by the original number
661 - 606 = 55
55 ÷ 606 = 0.09075907590759076
0.09075907590759076 x 100 = 9.08%