-6.46% is the change from 991 to 927
Calculation steps:
[( 927 - 991 ) ÷ 991] x 100 = -6.46%
Formula
Percentage change = [(927 - 991) / 991] x 100
Subtract the new number by the original number
927 - 991 = -64
-64 ÷ 991 = -0.06458123107971746
-0.06458123107971746 x 100 = -6.46%