-25.24% is the change from 531 to 397
Calculation steps:
[( 397 - 531 ) ÷ 531] x 100 = -25.24%
Formula
Percentage change = [(397 - 531) / 531] x 100
Subtract the new number by the original number
397 - 531 = -134
-134 ÷ 531 = -0.2523540489642185
-0.2523540489642185 x 100 = -25.24%