-50% is the change from 294 to 147
Calculation steps:
[( 147 - 294 ) ÷ 294] x 100 = -50%
Formula
Percentage change = [(147 - 294) / 294] x 100
Subtract the new number by the original number
147 - 294 = -147
-147 ÷ 294 = -0.5
-0.5 x 100 = -50%
Example