-23.49% is the change from 677 to 518
Calculation steps:
[( 518 - 677 ) ÷ 677] x 100 = -23.49%
Formula
Percentage change = [(518 - 677) / 677] x 100
Subtract the new number by the original number
518 - 677 = -159
-159 ÷ 677 = -0.23485967503692762
-0.23485967503692762 x 100 = -23.49%