-97.23% is the change from 687 to 19
Calculation steps:
[( 19 - 687 ) ÷ 687] x 100 = -97.23%
Formula
Percentage change = [(19 - 687) / 687] x 100
Subtract the new number by the original number
19 - 687 = -668
-668 ÷ 687 = -0.9723435225618632
-0.9723435225618632 x 100 = -97.23%