-94.29% is the change from 280 to 16
Calculation steps:
[( 16 - 280 ) ÷ 280] x 100 = -94.29%
Formula
Percentage change = [(16 - 280) / 280] x 100
Subtract the new number by the original number
16 - 280 = -264
-264 ÷ 280 = -0.9428571428571428
-0.9428571428571428 x 100 = -94.29%