-88.87% is the change from 503 to 56
Calculation steps:
[( 56 - 503 ) ÷ 503] x 100 = -88.87%
Formula
Percentage change = [(56 - 503) / 503] x 100
Subtract the new number by the original number
56 - 503 = -447
-447 ÷ 503 = -0.8886679920477137
-0.8886679920477137 x 100 = -88.87%