-9.75% is the change from 677 to 611
Calculation steps:
[( 611 - 677 ) ÷ 677] x 100 = -9.75%
Formula
Percentage change = [(611 - 677) / 677] x 100
Subtract the new number by the original number
611 - 677 = -66
-66 ÷ 677 = -0.09748892171344166
-0.09748892171344166 x 100 = -9.75%