-31.28% is the change from 991 to 681
Calculation steps:
[( 681 - 991 ) ÷ 991] x 100 = -31.28%
Formula
Percentage change = [(681 - 991) / 991] x 100
Subtract the new number by the original number
681 - 991 = -310
-310 ÷ 991 = -0.31281533804238143
-0.31281533804238143 x 100 = -31.28%