-74.12% is the change from 340 to 88
Calculation steps:
[( 88 - 340 ) ÷ 340] x 100 = -74.12%
Formula
Percentage change = [(88 - 340) / 340] x 100
Subtract the new number by the original number
88 - 340 = -252
-252 ÷ 340 = -0.7411764705882353
-0.7411764705882353 x 100 = -74.12%