-24.64% is the change from 280 to 211
Calculation steps:
[( 211 - 280 ) ÷ 280] x 100 = -24.64%
Formula
Percentage change = [(211 - 280) / 280] x 100
Subtract the new number by the original number
211 - 280 = -69
-69 ÷ 280 = -0.24642857142857144
-0.24642857142857144 x 100 = -24.64%