-56.31% is the change from 991 to 433
Calculation steps:
[( 433 - 991 ) ÷ 991] x 100 = -56.31%
Formula
Percentage change = [(433 - 991) / 991] x 100
Subtract the new number by the original number
433 - 991 = -558
-558 ÷ 991 = -0.5630676084762866
-0.5630676084762866 x 100 = -56.31%