-91.99% is the change from 687 to 55
Calculation steps:
[( 55 - 687 ) ÷ 687] x 100 = -91.99%
Formula
Percentage change = [(55 - 687) / 687] x 100
Subtract the new number by the original number
55 - 687 = -632
-632 ÷ 687 = -0.9199417758369723
-0.9199417758369723 x 100 = -91.99%