-29.39% is the change from 677 to 478
Calculation steps:
[( 478 - 677 ) ÷ 677] x 100 = -29.39%
Formula
Percentage change = [(478 - 677) / 677] x 100
Subtract the new number by the original number
478 - 677 = -199
-199 ÷ 677 = -0.29394387001477107
-0.29394387001477107 x 100 = -29.39%