-49.95% is the change from 973 to 487
Calculation steps:
[( 487 - 973 ) ÷ 973] x 100 = -49.95%
Formula
Percentage change = [(487 - 973) / 973] x 100
Subtract the new number by the original number
487 - 973 = -486
-486 ÷ 973 = -0.499486125385406
-0.499486125385406 x 100 = -49.95%