-59.18% is the change from 686 to 280
Calculation steps:
[( 280 - 686 ) ÷ 686] x 100 = -59.18%
Formula
Percentage change = [(280 - 686) / 686] x 100
Subtract the new number by the original number
280 - 686 = -406
-406 ÷ 686 = -0.5918367346938775
-0.5918367346938775 x 100 = -59.18%