-34.49% is the change from 287 to 188
Calculation steps:
[( 188 - 287 ) ÷ 287] x 100 = -34.49%
Formula
Percentage change = [(188 - 287) / 287] x 100
Subtract the new number by the original number
188 - 287 = -99
-99 ÷ 287 = -0.34494773519163763
-0.34494773519163763 x 100 = -34.49%