-31.07% is the change from 531 to 366
Calculation steps:
[( 366 - 531 ) ÷ 531] x 100 = -31.07%
Formula
Percentage change = [(366 - 531) / 531] x 100
Subtract the new number by the original number
366 - 531 = -165
-165 ÷ 531 = -0.3107344632768362
-0.3107344632768362 x 100 = -31.07%