-59.48% is the change from 686 to 278
Calculation steps:
[( 278 - 686 ) ÷ 686] x 100 = -59.48%
Formula
Percentage change = [(278 - 686) / 686] x 100
Subtract the new number by the original number
278 - 686 = -408
-408 ÷ 686 = -0.5947521865889213
-0.5947521865889213 x 100 = -59.48%