-51% is the change from 502 to 246
Calculation steps:
[( 246 - 502 ) ÷ 502] x 100 = -51%
Formula
Percentage change = [(246 - 502) / 502] x 100
Subtract the new number by the original number
246 - 502 = -256
-256 ÷ 502 = -0.5099601593625498
-0.5099601593625498 x 100 = -51%