-59.65% is the change from 285 to 115
Calculation steps:
[( 115 - 285 ) ÷ 285] x 100 = -59.65%
Formula
Percentage change = [(115 - 285) / 285] x 100
Subtract the new number by the original number
115 - 285 = -170
-170 ÷ 285 = -0.5964912280701754
-0.5964912280701754 x 100 = -59.65%