-23.08% is the change from 286 to 220
Calculation steps:
[( 220 - 286 ) ÷ 286] x 100 = -23.08%
Formula
Percentage change = [(220 - 286) / 286] x 100
Subtract the new number by the original number
220 - 286 = -66
-66 ÷ 286 = -0.23076923076923078
-0.23076923076923078 x 100 = -23.08%