-21.58% is the change from 366 to 287
Calculation steps:
[( 287 - 366 ) ÷ 366] x 100 = -21.58%
Formula
Percentage change = [(287 - 366) / 366] x 100
Subtract the new number by the original number
287 - 366 = -79
-79 ÷ 366 = -0.21584699453551912
-0.21584699453551912 x 100 = -21.58%