-63.08% is the change from 688 to 254
Calculation steps:
[( 254 - 688 ) ÷ 688] x 100 = -63.08%
Formula
Percentage change = [(254 - 688) / 688] x 100
Subtract the new number by the original number
254 - 688 = -434
-434 ÷ 688 = -0.6308139534883721
-0.6308139534883721 x 100 = -63.08%