-0.61% is the change from 991 to 985
Calculation steps:
[( 985 - 991 ) ÷ 991] x 100 = -0.61%
Formula
Percentage change = [(985 - 991) / 991] x 100
Subtract the new number by the original number
985 - 991 = -6
-6 ÷ 991 = -0.006054490413723511
-0.006054490413723511 x 100 = -0.61%