-45.74% is the change from 516 to 280
Calculation steps:
[( 280 - 516 ) ÷ 516] x 100 = -45.74%
Formula
Percentage change = [(280 - 516) / 516] x 100
Subtract the new number by the original number
280 - 516 = -236
-236 ÷ 516 = -0.4573643410852713
-0.4573643410852713 x 100 = -45.74%