-24.29% is the change from 280 to 212
Calculation steps:
[( 212 - 280 ) ÷ 280] x 100 = -24.29%
Formula
Percentage change = [(212 - 280) / 280] x 100
Subtract the new number by the original number
212 - 280 = -68
-68 ÷ 280 = -0.24285714285714285
-0.24285714285714285 x 100 = -24.29%