-56.86% is the change from 503 to 217
Calculation steps:
[( 217 - 503 ) ÷ 503] x 100 = -56.86%
Formula
Percentage change = [(217 - 503) / 503] x 100
Subtract the new number by the original number
217 - 503 = -286
-286 ÷ 503 = -0.5685884691848907
-0.5685884691848907 x 100 = -56.86%