-53.33% is the change from 315 to 147
Calculation steps:
[( 147 - 315 ) ÷ 315] x 100 = -53.33%
Formula
Percentage change = [(147 - 315) / 315] x 100
Subtract the new number by the original number
147 - 315 = -168
-168 ÷ 315 = -0.5333333333333333
-0.5333333333333333 x 100 = -53.33%