-92.15% is the change from 688 to 54
Calculation steps:
[( 54 - 688 ) ÷ 688] x 100 = -92.15%
Formula
Percentage change = [(54 - 688) / 688] x 100
Subtract the new number by the original number
54 - 688 = -634
-634 ÷ 688 = -0.9215116279069767
-0.9215116279069767 x 100 = -92.15%