-21.31% is the change from 366 to 288
Calculation steps:
[( 288 - 366 ) ÷ 366] x 100 = -21.31%
Formula
Percentage change = [(288 - 366) / 366] x 100
Subtract the new number by the original number
288 - 366 = -78
-78 ÷ 366 = -0.21311475409836064
-0.21311475409836064 x 100 = -21.31%