-47.89% is the change from 950 to 495
Calculation steps:
[( 495 - 950 ) ÷ 950] x 100 = -47.89%
Formula
Percentage change = [(495 - 950) / 950] x 100
Subtract the new number by the original number
495 - 950 = -455
-455 ÷ 950 = -0.4789473684210526
-0.4789473684210526 x 100 = -47.89%