-43.17% is the change from 315 to 179
Calculation steps:
[( 179 - 315 ) ÷ 315] x 100 = -43.17%
Formula
Percentage change = [(179 - 315) / 315] x 100
Subtract the new number by the original number
179 - 315 = -136
-136 ÷ 315 = -0.43174603174603177
-0.43174603174603177 x 100 = -43.17%