-43.69% is the change from 991 to 558
Calculation steps:
[( 558 - 991 ) ÷ 991] x 100 = -43.69%
Formula
Percentage change = [(558 - 991) / 991] x 100
Subtract the new number by the original number
558 - 991 = -433
-433 ÷ 991 = -0.43693239152371344
-0.43693239152371344 x 100 = -43.69%