-51.8% is the change from 305 to 147
Calculation steps:
[( 147 - 305 ) ÷ 305] x 100 = -51.8%
Formula
Percentage change = [(147 - 305) / 305] x 100
Subtract the new number by the original number
147 - 305 = -158
-158 ÷ 305 = -0.5180327868852459
-0.5180327868852459 x 100 = -51.8%