-51.26% is the change from 991 to 483
Calculation steps:
[( 483 - 991 ) ÷ 991] x 100 = -51.26%
Formula
Percentage change = [(483 - 991) / 991] x 100
Subtract the new number by the original number
483 - 991 = -508
-508 ÷ 991 = -0.5126135216952573
-0.5126135216952573 x 100 = -51.26%