-35.36% is the change from 280 to 181
Calculation steps:
[( 181 - 280 ) ÷ 280] x 100 = -35.36%
Formula
Percentage change = [(181 - 280) / 280] x 100
Subtract the new number by the original number
181 - 280 = -99
-99 ÷ 280 = -0.3535714285714286
-0.3535714285714286 x 100 = -35.36%