-60.4% is the change from 505 to 200
Calculation steps:
[( 200 - 505 ) ÷ 505] x 100 = -60.4%
Formula
Percentage change = [(200 - 505) / 505] x 100
Subtract the new number by the original number
200 - 505 = -305
-305 ÷ 505 = -0.6039603960396039
-0.6039603960396039 x 100 = -60.4%