-47.95% is the change from 342 to 178
Calculation steps:
[( 178 - 342 ) ÷ 342] x 100 = -47.95%
Formula
Percentage change = [(178 - 342) / 342] x 100
Subtract the new number by the original number
178 - 342 = -164
-164 ÷ 342 = -0.47953216374269003
-0.47953216374269003 x 100 = -47.95%