-53.51% is the change from 342 to 159
Calculation steps:
[( 159 - 342 ) ÷ 342] x 100 = -53.51%
Formula
Percentage change = [(159 - 342) / 342] x 100
Subtract the new number by the original number
159 - 342 = -183
-183 ÷ 342 = -0.5350877192982456
-0.5350877192982456 x 100 = -53.51%