-68.57% is the change from 280 to 88
Calculation steps:
[( 88 - 280 ) ÷ 280] x 100 = -68.57%
Formula
Percentage change = [(88 - 280) / 280] x 100
Subtract the new number by the original number
88 - 280 = -192
-192 ÷ 280 = -0.6857142857142857
-0.6857142857142857 x 100 = -68.57%