-5.25% is the change from 324 to 307
Calculation steps:
[( 307 - 324 ) ÷ 324] x 100 = -5.25%
Formula
Percentage change = [(307 - 324) / 324] x 100
Subtract the new number by the original number
307 - 324 = -17
-17 ÷ 324 = -0.05246913580246913
-0.05246913580246913 x 100 = -5.25%