-34.39% is the change from 285 to 187
Calculation steps:
[( 187 - 285 ) ÷ 285] x 100 = -34.39%
Formula
Percentage change = [(187 - 285) / 285] x 100
Subtract the new number by the original number
187 - 285 = -98
-98 ÷ 285 = -0.34385964912280703
-0.34385964912280703 x 100 = -34.39%