4.72% is the change from 636 to 666
Calculation steps:
[( 666 - 636 ) ÷ 636] x 100 = 4.72%
Formula
Percentage change = [(666 - 636) / 636] x 100
Subtract the new number by the original number
666 - 636 = 30
30 ÷ 636 = 0.04716981132075472
0.04716981132075472 x 100 = 4.72%