-47.14% is the change from 280 to 148
Calculation steps:
[( 148 - 280 ) ÷ 280] x 100 = -47.14%
Formula
Percentage change = [(148 - 280) / 280] x 100
Subtract the new number by the original number
148 - 280 = -132
-132 ÷ 280 = -0.4714285714285714
-0.4714285714285714 x 100 = -47.14%