-57.82% is the change from 991 to 418
Calculation steps:
[( 418 - 991 ) ÷ 991] x 100 = -57.82%
Formula
Percentage change = [(418 - 991) / 991] x 100
Subtract the new number by the original number
418 - 991 = -573
-573 ÷ 991 = -0.5782038345105953
-0.5782038345105953 x 100 = -57.82%