-32.86% is the change from 280 to 188
Calculation steps:
[( 188 - 280 ) ÷ 280] x 100 = -32.86%
Formula
Percentage change = [(188 - 280) / 280] x 100
Subtract the new number by the original number
188 - 280 = -92
-92 ÷ 280 = -0.32857142857142857
-0.32857142857142857 x 100 = -32.86%