-50.15% is the change from 973 to 485
Calculation steps:
[( 485 - 973 ) ÷ 973] x 100 = -50.15%
Formula
Percentage change = [(485 - 973) / 973] x 100
Subtract the new number by the original number
485 - 973 = -488
-488 ÷ 973 = -0.5015416238437821
-0.5015416238437821 x 100 = -50.15%