-2.36% is the change from 677 to 661
Calculation steps:
[( 661 - 677 ) ÷ 677] x 100 = -2.36%
Formula
Percentage change = [(661 - 677) / 677] x 100
Subtract the new number by the original number
661 - 677 = -16
-16 ÷ 677 = -0.023633677991137372
-0.023633677991137372 x 100 = -2.36%