-52.29% is the change from 503 to 240
Calculation steps:
[( 240 - 503 ) ÷ 503] x 100 = -52.29%
Formula
Percentage change = [(240 - 503) / 503] x 100
Subtract the new number by the original number
240 - 503 = -263
-263 ÷ 503 = -0.5228628230616302
-0.5228628230616302 x 100 = -52.29%