-87.48% is the change from 503 to 63
Calculation steps:
[( 63 - 503 ) ÷ 503] x 100 = -87.48%
Formula
Percentage change = [(63 - 503) / 503] x 100
Subtract the new number by the original number
63 - 503 = -440
-440 ÷ 503 = -0.8747514910536779
-0.8747514910536779 x 100 = -87.48%