9.57% is the change from 606 to 664
Calculation steps:
[( 664 - 606 ) ÷ 606] x 100 = 9.57%
Formula
Percentage change = [(664 - 606) / 606] x 100
Subtract the new number by the original number
664 - 606 = 58
58 ÷ 606 = 0.09570957095709572
0.09570957095709572 x 100 = 9.57%