-98.83% is the change from 342 to 4
Calculation steps:
[( 4 - 342 ) ÷ 342] x 100 = -98.83%
Formula
Percentage change = [(4 - 342) / 342] x 100
Subtract the new number by the original number
4 - 342 = -338
-338 ÷ 342 = -0.9883040935672515
-0.9883040935672515 x 100 = -98.83%