-49.95% is the change from 989 to 495
Calculation steps:
[( 495 - 989 ) ÷ 989] x 100 = -49.95%
Formula
Percentage change = [(495 - 989) / 989] x 100
Subtract the new number by the original number
495 - 989 = -494
-494 ÷ 989 = -0.4994944388270981
-0.4994944388270981 x 100 = -49.95%