-63.99% is the change from 686 to 247
Calculation steps:
[( 247 - 686 ) ÷ 686] x 100 = -63.99%
Formula
Percentage change = [(247 - 686) / 686] x 100
Subtract the new number by the original number
247 - 686 = -439
-439 ÷ 686 = -0.6399416909620991
-0.6399416909620991 x 100 = -63.99%