-49% is the change from 349 to 178
Calculation steps:
[( 178 - 349 ) ÷ 349] x 100 = -49%
Formula
Percentage change = [(178 - 349) / 349] x 100
Subtract the new number by the original number
178 - 349 = -171
-171 ÷ 349 = -0.4899713467048711
-0.4899713467048711 x 100 = -49%