-93.01% is the change from 286 to 20
Calculation steps:
[( 20 - 286 ) ÷ 286] x 100 = -93.01%
Formula
Percentage change = [(20 - 286) / 286] x 100
Subtract the new number by the original number
20 - 286 = -266
-266 ÷ 286 = -0.9300699300699301
-0.9300699300699301 x 100 = -93.01%