-96.76% is the change from 340 to 11
Calculation steps:
[( 11 - 340 ) ÷ 340] x 100 = -96.76%
Formula
Percentage change = [(11 - 340) / 340] x 100
Subtract the new number by the original number
11 - 340 = -329
-329 ÷ 340 = -0.9676470588235294
-0.9676470588235294 x 100 = -96.76%