-55.97% is the change from 997 to 439
Calculation steps:
[( 439 - 997 ) ÷ 997] x 100 = -55.97%
Formula
Percentage change = [(439 - 997) / 997] x 100
Subtract the new number by the original number
439 - 997 = -558
-558 ÷ 997 = -0.559679037111334
-0.559679037111334 x 100 = -55.97%