-49.39% is the change from 978 to 495
Calculation steps:
[( 495 - 978 ) ÷ 978] x 100 = -49.39%
Formula
Percentage change = [(495 - 978) / 978] x 100
Subtract the new number by the original number
495 - 978 = -483
-483 ÷ 978 = -0.4938650306748466
-0.4938650306748466 x 100 = -49.39%