-48.1% is the change from 343 to 178
Calculation steps:
[( 178 - 343 ) ÷ 343] x 100 = -48.1%
Formula
Percentage change = [(178 - 343) / 343] x 100
Subtract the new number by the original number
178 - 343 = -165
-165 ÷ 343 = -0.48104956268221577
-0.48104956268221577 x 100 = -48.1%