-99.65% is the change from 285 to 1
Calculation steps:
[( 1 - 285 ) ÷ 285] x 100 = -99.65%
Formula
Percentage change = [(1 - 285) / 285] x 100
Subtract the new number by the original number
1 - 285 = -284
-284 ÷ 285 = -0.9964912280701754
-0.9964912280701754 x 100 = -99.65%