-49.38% is the change from 324 to 164
Calculation steps:
[( 164 - 324 ) ÷ 324] x 100 = -49.38%
Formula
Percentage change = [(164 - 324) / 324] x 100
Subtract the new number by the original number
164 - 324 = -160
-160 ÷ 324 = -0.49382716049382713
-0.49382716049382713 x 100 = -49.38%