-82.57% is the change from 505 to 88
Calculation steps:
[( 88 - 505 ) ÷ 505] x 100 = -82.57%
Formula
Percentage change = [(88 - 505) / 505] x 100
Subtract the new number by the original number
88 - 505 = -417
-417 ÷ 505 = -0.8257425742574257
-0.8257425742574257 x 100 = -82.57%