-49.09% is the change from 328 to 167
Calculation steps:
[( 167 - 328 ) ÷ 328] x 100 = -49.09%
Formula
Percentage change = [(167 - 328) / 328] x 100
Subtract the new number by the original number
167 - 328 = -161
-161 ÷ 328 = -0.49085365853658536
-0.49085365853658536 x 100 = -49.09%