-22.53% is the change from 324 to 251
Calculation steps:
[( 251 - 324 ) ÷ 324] x 100 = -22.53%
Formula
Percentage change = [(251 - 324) / 324] x 100
Subtract the new number by the original number
251 - 324 = -73
-73 ÷ 324 = -0.22530864197530864
-0.22530864197530864 x 100 = -22.53%