-14.53% is the change from 991 to 847
Calculation steps:
[( 847 - 991 ) ÷ 991] x 100 = -14.53%
Formula
Percentage change = [(847 - 991) / 991] x 100
Subtract the new number by the original number
847 - 991 = -144
-144 ÷ 991 = -0.14530776992936428
-0.14530776992936428 x 100 = -14.53%