-99.42% is the change from 342 to 2
Calculation steps:
[( 2 - 342 ) ÷ 342] x 100 = -99.42%
Formula
Percentage change = [(2 - 342) / 342] x 100
Subtract the new number by the original number
2 - 342 = -340
-340 ÷ 342 = -0.9941520467836257
-0.9941520467836257 x 100 = -99.42%