-50.1% is the change from 972 to 485
Calculation steps:
[( 485 - 972 ) ÷ 972] x 100 = -50.1%
Formula
Percentage change = [(485 - 972) / 972] x 100
Subtract the new number by the original number
485 - 972 = -487
-487 ÷ 972 = -0.5010288065843621
-0.5010288065843621 x 100 = -50.1%