-34.84% is the change from 287 to 187
Calculation steps:
[( 187 - 287 ) ÷ 287] x 100 = -34.84%
Formula
Percentage change = [(187 - 287) / 287] x 100
Subtract the new number by the original number
187 - 287 = -100
-100 ÷ 287 = -0.34843205574912894
-0.34843205574912894 x 100 = -34.84%