-51.89% is the change from 503 to 242
Calculation steps:
[( 242 - 503 ) ÷ 503] x 100 = -51.89%
Formula
Percentage change = [(242 - 503) / 503] x 100
Subtract the new number by the original number
242 - 503 = -261
-261 ÷ 503 = -0.5188866799204771
-0.5188866799204771 x 100 = -51.89%