-38.98% is the change from 531 to 324
Calculation steps:
[( 324 - 531 ) ÷ 531] x 100 = -38.98%
Formula
Percentage change = [(324 - 531) / 531] x 100
Subtract the new number by the original number
324 - 531 = -207
-207 ÷ 531 = -0.3898305084745763
-0.3898305084745763 x 100 = -38.98%