4.08% is the change from 661 to 688
Calculation steps:
[( 688 - 661 ) ÷ 661] x 100 = 4.08%
Formula
Percentage change = [(688 - 661) / 661] x 100
Subtract the new number by the original number
688 - 661 = 27
27 ÷ 661 = 0.04084720121028744
0.04084720121028744 x 100 = 4.08%