-48.37% is the change from 306 to 158
Calculation steps:
[( 158 - 306 ) ÷ 306] x 100 = -48.37%
Formula
Percentage change = [(158 - 306) / 306] x 100
Subtract the new number by the original number
158 - 306 = -148
-148 ÷ 306 = -0.48366013071895425
-0.48366013071895425 x 100 = -48.37%