-31.48% is the change from 988 to 677
Calculation steps:
[( 677 - 988 ) ÷ 988] x 100 = -31.48%
Formula
Percentage change = [(677 - 988) / 988] x 100
Subtract the new number by the original number
677 - 988 = -311
-311 ÷ 988 = -0.3147773279352227
-0.3147773279352227 x 100 = -31.48%