-97.19% is the change from 677 to 19
Calculation steps:
[( 19 - 677 ) ÷ 677] x 100 = -97.19%
Formula
Percentage change = [(19 - 677) / 677] x 100
Subtract the new number by the original number
19 - 677 = -658
-658 ÷ 677 = -0.9719350073855244
-0.9719350073855244 x 100 = -97.19%