-8.47% is the change from 354 to 324
Calculation steps:
[( 324 - 354 ) ÷ 354] x 100 = -8.47%
Formula
Percentage change = [(324 - 354) / 354] x 100
Subtract the new number by the original number
324 - 354 = -30
-30 ÷ 354 = -0.0847457627118644
-0.0847457627118644 x 100 = -8.47%