-99.42% is the change from 345 to 2
Calculation steps:
[( 2 - 345 ) ÷ 345] x 100 = -99.42%
Formula
Percentage change = [(2 - 345) / 345] x 100
Subtract the new number by the original number
2 - 345 = -343
-343 ÷ 345 = -0.9942028985507246
-0.9942028985507246 x 100 = -99.42%