-31.48% is the change from 991 to 679
Calculation steps:
[( 679 - 991 ) ÷ 991] x 100 = -31.48%
Formula
Percentage change = [(679 - 991) / 991] x 100
Subtract the new number by the original number
679 - 991 = -312
-312 ÷ 991 = -0.3148335015136226
-0.3148335015136226 x 100 = -31.48%