-38.08% is the change from 688 to 426
Calculation steps:
[( 426 - 688 ) ÷ 688] x 100 = -38.08%
Formula
Percentage change = [(426 - 688) / 688] x 100
Subtract the new number by the original number
426 - 688 = -262
-262 ÷ 688 = -0.3808139534883721
-0.3808139534883721 x 100 = -38.08%