-17.35% is the change from 392 to 324
Calculation steps:
[( 324 - 392 ) ÷ 392] x 100 = -17.35%
Formula
Percentage change = [(324 - 392) / 392] x 100
Subtract the new number by the original number
324 - 392 = -68
-68 ÷ 392 = -0.17346938775510204
-0.17346938775510204 x 100 = -17.35%