-87.93% is the change from 348 to 42
Calculation steps:
[( 42 - 348 ) ÷ 348] x 100 = -87.93%
Formula
Percentage change = [(42 - 348) / 348] x 100
Subtract the new number by the original number
42 - 348 = -306
-306 ÷ 348 = -0.8793103448275862
-0.8793103448275862 x 100 = -87.93%