3.03% is the change from 661 to 681
Calculation steps:
[( 681 - 661 ) ÷ 661] x 100 = 3.03%
Formula
Percentage change = [(681 - 661) / 661] x 100
Subtract the new number by the original number
681 - 661 = 20
20 ÷ 661 = 0.030257186081694403
0.030257186081694403 x 100 = 3.03%