-48.93% is the change from 977 to 499
Calculation steps:
[( 499 - 977 ) ÷ 977] x 100 = -48.93%
Formula
Percentage change = [(499 - 977) / 977] x 100
Subtract the new number by the original number
499 - 977 = -478
-478 ÷ 977 = -0.48925281473899696
-0.48925281473899696 x 100 = -48.93%