-64.51% is the change from 324 to 115
Calculation steps:
[( 115 - 324 ) ÷ 324] x 100 = -64.51%
Formula
Percentage change = [(115 - 324) / 324] x 100
Subtract the new number by the original number
115 - 324 = -209
-209 ÷ 324 = -0.6450617283950617
-0.6450617283950617 x 100 = -64.51%