-54.26% is the change from 505 to 231
Calculation steps:
[( 231 - 505 ) ÷ 505] x 100 = -54.26%
Formula
Percentage change = [(231 - 505) / 505] x 100
Subtract the new number by the original number
231 - 505 = -274
-274 ÷ 505 = -0.5425742574257426
-0.5425742574257426 x 100 = -54.26%