-87.3% is the change from 496 to 63
Calculation steps:
[( 63 - 496 ) ÷ 496] x 100 = -87.3%
Formula
Percentage change = [(63 - 496) / 496] x 100
Subtract the new number by the original number
63 - 496 = -433
-433 ÷ 496 = -0.8729838709677419
-0.8729838709677419 x 100 = -87.3%