-59.23% is the change from 991 to 404
Calculation steps:
[( 404 - 991 ) ÷ 991] x 100 = -59.23%
Formula
Percentage change = [(404 - 991) / 991] x 100
Subtract the new number by the original number
404 - 991 = -587
-587 ÷ 991 = -0.5923309788092835
-0.5923309788092835 x 100 = -59.23%