-49.67% is the change from 306 to 154
Calculation steps:
[( 154 - 306 ) ÷ 306] x 100 = -49.67%
Formula
Percentage change = [(154 - 306) / 306] x 100
Subtract the new number by the original number
154 - 306 = -152
-152 ÷ 306 = -0.49673202614379086
-0.49673202614379086 x 100 = -49.67%