-98.53% is the change from 340 to 5
Calculation steps:
[( 5 - 340 ) ÷ 340] x 100 = -98.53%
Formula
Percentage change = [(5 - 340) / 340] x 100
Subtract the new number by the original number
5 - 340 = -335
-335 ÷ 340 = -0.9852941176470589
-0.9852941176470589 x 100 = -98.53%