-41.79% is the change from 280 to 163
Calculation steps:
[( 163 - 280 ) ÷ 280] x 100 = -41.79%
Formula
Percentage change = [(163 - 280) / 280] x 100
Subtract the new number by the original number
163 - 280 = -117
-117 ÷ 280 = -0.41785714285714287
-0.41785714285714287 x 100 = -41.79%