-82.68% is the change from 508 to 88
Calculation steps:
[( 88 - 508 ) ÷ 508] x 100 = -82.68%
Formula
Percentage change = [(88 - 508) / 508] x 100
Subtract the new number by the original number
88 - 508 = -420
-420 ÷ 508 = -0.8267716535433071
-0.8267716535433071 x 100 = -82.68%